JP2010213719A - Low pressure sperm cell separation system - Google Patents
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Abstract
Description
本国際特許協力条約特許出願は、2002年8月1日に出願された米国仮特許出願番号60/400,971の利益を主張する。 This international patent cooperation treaty patent application claims the benefit of US Provisional Patent Application No. 60 / 400,971, filed August 1, 2002.
(I.技術分野)
対応して選択的に調整可能な流動特性を有する流体流における同調を通して生成された、選択的に制御された***細胞受精特性を有する***細胞授精サンプル、および***細胞授精サンプル受精能の比較を評価する方法。
(I. Technical field)
Evaluate comparison of sperm cell insemination samples with selectively controlled sperm cell fertilization characteristics and sperm cell insemination sample fertility produced through synchronization in fluid flow with corresponding and selectively adjustable flow characteristics how to.
(II.背景)
性の事前選択は、***細胞を富化X染色体保有集団および富化Y染色体保有集団に分離する安全かつ信頼性のある方法の開発に従って、家畜の多くの種において達成されている。WO 00/06193;WO 02/043574;WO 01/85913;WO 99/33956;WO 01/40765;WO 98/34094;WO 99/42810;WO 02/043486によって開示される例示的な方法および装置を参照のこと。
(II. Background)
Sex pre-selection has been achieved in many species of livestock following the development of safe and reliable methods of separating sperm cells into enriched X and enriched Y chromosome populations. Exemplary methods and apparatus disclosed by
性選択した***細胞に伴う重大な問題は、従来技術による市販のために生存可能であるかまたは有意に受精可能である性選択した授精サンプルまたは性選択した授精物を生成するのに有意な速度での***細胞の分離が、流動細胞計測器の増加する流体流圧力または1平方インチ当たり約50ポンドまでの流動分類機器(flow sort instrument)を必要としていることであり得る。この圧力の適用から生じる流動特性を有する流体流中に同調された哺乳動物の多くの種の***細胞に関して、生存率、運動性、または他の受精特性が変化した。 A significant problem with sex-selected sperm cells is the significant rate of producing sex-selected insemination samples or sex-selected insemination products that are viable or significantly fertilizable for commercial use by the prior art. Sperm cell separation may require the increased fluid flow pressure of the flow cytometer or flow sort instrument up to about 50 pounds per square inch. Survival, motility, or other fertilization characteristics have changed for many species of mammalian sperm cells synchronized in a fluid stream with flow characteristics resulting from the application of this pressure.
性選択した***細胞授精物または性選択した***細胞授精サンプルに伴う別の重大な問題は、サンプル間で非常に変動し得る***細胞受精能における大変大きな違いであり得る。従って、実質的に同一条件下で実施される人工受精の成功は、それに対応して異なる妊娠率を生じ得る。 Another significant problem with sex-selected sperm cell insemination products or sex-selected sperm cell insemination samples can be very large differences in sperm cell fertility that can vary greatly from sample to sample. Thus, the success of artificial insemination performed under substantially the same conditions can correspondingly result in different pregnancy rates.
既存の***細胞性選択技術に伴う別の重大な問題は、性選択した***細胞の受精能が、インビボ(例えば、人工受精手順に関連して)およびインビトロ(例えば、IVF手順に関連して)で直接比較され得るアッセイがないことであり得る。 Another significant problem with existing sperm cell sex selection techniques is that the fertility of sex-selected sperm cells is in vivo (eg, related to artificial fertilization procedures) and in vitro (eg, related to IVF procedures). There may be no assay that can be directly compared.
本発明は、富化X染色体保有集団および富化Y染色体保有集団に分離された、低下した***細胞受精***、ならびに分離した***細胞もしくは分類した***細胞、および特に流動分類した***細胞の機能および受精能を比較するための異種***アッセイの欠乏に関連する種々の問題に取り組む。 The present invention relates to reduced sperm cell fertilized spermatozoa separated into enriched X chromosome-bearing populations and enriched Y chromosome-bearing populations, as well as functions of separated sperm cells or sorted sperm cells, and particularly flow-classified sperm cells and Addresses various issues associated with the deficiency of heterologous sperm assays to compare fertility.
(III.発明の開示)
従って、本発明の広範な目的は、哺乳動物種の雄性から得られた***から単離された***細胞の***細胞受精特性(例えば、運動性、生存率、受精率、卵割率、胚盤胞率など)を制御するためのデバイス、およびこのようなデバイスを使用する方法を提供する。
(III. Disclosure of the Invention)
Accordingly, a broad object of the present invention is to provide sperm cell fertilization properties (eg, motility, survival rate, fertilization rate, cleavage rate, scutellum) of sperm cells isolated from semen obtained from male male species Devices for controlling cell rate, etc.) and methods of using such devices are provided.
本発明に従って制御された***細胞受精能を提供することは、多数かつ多様な種の哺乳動物(ウシ種の哺乳動物、ウマ種の哺乳動物、ヒツジ種の哺乳動物、イヌ 種の哺乳動物、ネコ種の哺乳動物、ブタ種の哺乳動物、海洋哺乳動物、シカ種の哺乳動物、霊長類種の哺乳動物、ヤギ種の哺乳動物、あるいはWilson,D.EおよびReeder,D.M.、MammalSpecies of the World、Smithsonian Institution Press(1993)(本明細書中で参考として援用される)によって列挙された種の哺乳動物からなる群より選択される哺乳動物が挙げられるが、これらに限定されない)から得られる***細胞を用いて達成され得る。 Providing controlled sperm cell fertility in accordance with the present invention is possible for a large and diverse species of mammals (bovine mammals, horse mammals, sheep mammals, dog mammals, cats Species Mammals, Pig Species Mammals, Marine Mammals, Deer Species Mammals, Primate Species Mammals, Goat Species Mammals, or Wilson, DE and Reeder, DM, Mammal Specs of obtained from the World, Smithsonian Institution Press (1993), including, but not limited to, mammals selected from the group consisting of mammals of the species listed by reference herein. Can be achieved using sperm cells.
本発明の特定の実施形態に関して、制御された***細胞受精特性は、哺乳動物種の雄性の***から***細胞を単離することに先立つ受精特性の肯定的選択(affirmative selection)、および***細胞受精特性を変化させるために本発明の適用して、所望の受精特性を提供することを含む。本発明の他の実施形態に関して、***細胞処理条件は、特定の種の哺乳動物の***細胞を処理して制御された受精特性を有する***細胞を得るために使用され得る、***細胞処理条件の広範囲内で選択される。制御された受精特性は、処理した***細胞の集団内に運動性の***細胞、無傷のアクロソーム、生存可能な***細胞を有する所望の集団;または処理した***細胞がインビトロで卵母細胞を受精させるために使用される場合には、卵母細胞の所望の卵割率もしくは胚盤胞形成率;または処理した***細胞が人工授精のために使用される場合には、所望の妊娠率もしくは子孫の性比を含み得る。本発明の特定の実施形態に関して、処理した***細胞集団内での運動性の***細胞のより大きい集団、生存可能な***細胞のより大きい集団、無傷のアクロソームのより大きい集団、または受精可能な***細胞のより多数は、同一の***細胞集団の従来の処理と比較して達成され得る。本発明の特定の実施形態は、新鮮な***液中の***細胞の受精特性と実質的に異ならないか、または実質的に匹敵する、制御された受精特性を有する***細胞の供給を可能にする。他の事例において、本発明の特定の実施形態の適用は、所望の場合、新鮮な***液の***細胞の受精特性と実質的に異なる、制御された受精特性を有する***細胞を生じ得る。特に、本発明の特定の実施形態は、制御された受精特性を有するウシ***細胞を提供するために使用され得るか、または制御された受精特性を有するウマ***細胞を提供するために使用され得、所望の場合、新鮮なウシ***液またはウマ***液中のウシ***細胞またはウマ***細胞の受精特性に実質的に匹敵する受精特性を伴って提供され得る。 For certain embodiments of the present invention, controlled sperm cell fertilization characteristics include affirmative selection of fertilization characteristics prior to isolating sperm cells from male semen of mammalian species, and sperm cell fertilization. The application of the present invention to change the characteristics includes providing the desired fertilization characteristics. With respect to other embodiments of the present invention, sperm cell treatment conditions are those of sperm cell treatment conditions that can be used to treat sperm cells of a particular species of mammal to obtain sperm cells with controlled fertilization characteristics. Selected within a wide range. Controlled fertilization properties are the desired population with motile sperm cells, intact acrosomes, viable sperm cells within the population of treated sperm cells; or the treated sperm cells fertilize oocytes in vitro The desired cleavage rate or blastocyst formation rate of the oocyte; or the desired pregnancy rate or progeny of the progeny when the treated sperm cell is used for artificial insemination. A sex ratio can be included. For certain embodiments of the invention, a larger population of motile sperm cells, a larger population of viable sperm cells, a larger population of intact acrosomes, or a fertilized sperm within a treated sperm cell population A greater number of cells can be achieved compared to conventional treatment of the same sperm cell population. Certain embodiments of the present invention allow for the provision of sperm cells with controlled fertilization characteristics that are substantially different from or substantially comparable to the fertilization characteristics of sperm cells in fresh ejaculate. . In other instances, application of certain embodiments of the present invention can result in sperm cells having controlled fertilization characteristics that are substantially different from the fertilization characteristics of fresh ejaculate sperm cells, if desired. In particular, certain embodiments of the present invention can be used to provide bovine sperm cells with controlled fertilization characteristics or can be used to provide equine sperm cells with controlled fertilization characteristics. If desired, it can be provided with fertilization characteristics substantially comparable to the fertilization characteristics of bovine sperm cells or equine sperm cells in fresh bovine ejaculate or equine ejaculation fluid.
本発明の別の広範な目的は、制御された***細胞受精特性を有する***細胞授精サンプルを提供することであり得、このような***細胞授精サンプルは、限定なしに、動物種の雌性の人工授精、インビトロでの卵母細胞の受精、または***細胞の細胞質内注射などのために構成され得る。 Another broad object of the present invention may be to provide a sperm cell insemination sample with controlled sperm cell fertilization characteristics, such as, without limitation, a female artificial insemination of an animal species. It may be configured for insemination, in vitro oocyte fertilization, or intracytoplasmic injection of sperm cells.
本発明の別の広範な目的は、***細胞受精特性(例えば、運動性、生存率、受精率、卵割率、胚盤胞率など)の肯定的制御を提供し得る、***細胞を性選択する方法を提供することであり得る。本発明のこの広範は目的の1つの局面は、フローサイトメトリーまたは細胞を分類するデバイス、あるいは性選択した***細胞の受精特性の肯定的制御を可能にする、フローサイトメトリーまたは細胞を分類する方法を提供することであり得る。 Another broad object of the present invention is to sexually select sperm cells that can provide positive control of sperm cell fertilization properties (eg, motility, survival rate, fertilization rate, cleavage rate, blastocyst rate, etc.) It can be to provide a way to do that. One aspect of this broad object of the invention is a flow cytometry or cell sorting device, or a flow cytometry or cell sorting method that allows positive control of fertilization properties of sex-selected sperm cells. Can be.
本発明の別の目的は、ウシ種の哺乳動物の雌性の人工授精のために構成された、制御された***細胞受精特性を有する性選択したウシ***細胞授精サンプルを提供することであり得、そのウシ***細胞授精サンプルは、制御された***細胞受精特性を有する約100,000と約3,000,000との間の性選択したウシ***細胞を含む。 Another object of the present invention may be to provide a sex-selected bovine sperm cell insemination sample with controlled sperm cell fertilization characteristics configured for female insemination of bovine mammals, The bovine sperm cell insemination sample contains between about 100,000 and about 3,000,000 sex-selected bovine sperm cells with controlled sperm cell fertilization characteristics.
本発明の別の目的は、ウマ種の哺乳動物の雌性の人工授精のために構成された、制御された***細胞受精特性を有する性選択したウマ***細胞授精サンプルを提供することであり得、そのウマ***細胞授精サンプルは、制御された***細胞受精特性を有する約5,000,000と約50,000,000との間の性選択したウマ***細胞を含む。 Another object of the present invention may be to provide a sex-selected equine sperm cell insemination sample with controlled sperm cell insemination characteristics configured for female insemination of equine mammals, The equine sperm cell insemination sample contains between about 5,000,000 and about 50,000,000 sex-selected equine sperm cells with controlled sperm cell fertilization characteristics.
本発明の別の本質的な目的は、***細胞の加工、***細胞の保存、または***細胞の使用(雌性哺乳動物の授精または卵母細胞の受精が挙げられるが、これらに限定されない)に関して、***細胞の制御された***細胞受精特性を維持するデバイスまたは方法を提供することであり得る。 Another essential object of the present invention relates to sperm cell processing, sperm cell storage, or use of sperm cells, including but not limited to fertilization of female mammals or fertilization of oocytes. It may be to provide a device or method that maintains the controlled sperm cell fertilization properties of sperm cells.
本発明の別の本質的な目的は、制御された***細胞受精特性を有する***細胞授精サンプルを用いて、哺乳動物種の雌性を人工授精する方法を提供することであり得る。本発明の特定の実施形態に関して、制御された受精特性を有する、少数もしくは減少された数の***細胞を用いる授精方法を、このような***細胞が富化X染色体保有集団もしくは富化Y染色体保有集団に分離されるか否かに関わらず、このような人口授精手順において使用される通常の数もしくは代表的な数の***細胞と比較した。 Another essential object of the present invention may be to provide a method of artificially inseminating females of mammalian species using sperm cell insemination samples having controlled sperm cell fertilization characteristics. For certain embodiments of the invention, a fertilization method using a small or reduced number of sperm cells with controlled fertilization characteristics, wherein such sperm cells possess an enriched X chromosome-bearing population or an enriched Y chromosome possession. It was compared to the normal or representative number of sperm cells used in such an insemination procedure, whether or not segregated into a population.
本発明の別の広範な目的は、***細胞集団の比較受精能を評価する方法を提供することであり得る。本発明の特定の実施形態は、各々の雄性由来の***細胞が実質的に同一のフローサイトメトリー処理に曝される場合に、哺乳動物種の異なる雄性由来の***細胞の比較受精能を評価する方法を提供する。本発明の他の実施形態は、異なるフローサイトメトリー処理に曝される哺乳動物種の同一の雄性由来の***細胞の比較受精能を評価する方法を提供する。本発明の特定の実施形態は、制御された受精特性を有する***細胞の比較受精能を示す方法を提供する。
本発明は、例えば以下の項目を提供する。
(項目1)
***細胞授精サンプルを生成する方法であって、以下:
a.哺乳動物の1種の雄から***を獲得する工程;
b.フロー特性を有する流体流を生成する工程;
c.該流体流のフロー特性を変化させて、流体流圧を調整する工程;
d.該***細胞を該流体流中に運び去る工程;
e.***細胞受精特性を該流体流圧の調整を介して制御する工程;および
f.制御された***細胞受精特性を有する***細胞授精サンプルを生成する工程
を包含する、方法。
(項目2)
項目1に記載された***細胞授精サンプルを生成する方法であって、ここで、前記哺乳動物の種が、哺乳動物のウシ種、哺乳動物のウマ種、哺乳動物のヒツジ種、哺乳動物のイヌ種、哺乳動物のネコ種、哺乳動物のブタ種、哺乳動物の海洋動物種、哺乳動物のシカ種、哺乳動物の霊長類種、哺乳動物のヤギ種からなる群から選択される、方法。
(項目3)
項目1に記載の***細胞授精サンプルを生成する方法であって、ここで前記流体流が、シース流体流を含む、方法。
(項目4)
項目3に記載の***細胞授精サンプルを生成する方法であって、前記シース流体流が、リン酸緩衝化生理食塩水(PBS)を含むシース流体を含む、方法。
(項目5)
項目3に記載の***細胞授精サンプルを生成する方法であって、シース流体流が、クエン酸緩衝液を含有するシース流体を含む、方法。
(項目6)
項目5に記載の***細胞授精サンプルを生成する方法であって、前記クエン酸緩衝液が、約2.9%のクエン酸ナトリウムを含む、方法。
(項目7)
項目3に記載の***細胞授精サンプルを生成する方法であって、前記シース流体流が、HEPES緩衝液を含有しているシース流体を含む、方法。
(項目8)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記流体流が、フローサイトメーターまたはセルソーター中で生成される、方法。
(項目9)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記流体流のフロー特性を変化させて流体流圧を調整する前記工程が、該フロー特性を変化させて該流体流圧を1平方インチ当たり約20ポンドと1平方インチ当たり約60ポンドとの間に調整する工程を包含する、方法。
(項目10)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウシ種の雄からウシ***を獲得する工程を包含し、そして前記流体流圧の調整を介して***細胞受精特性を制御する前記工程が、該***中の該ウシ***細胞の該ウシ***細胞受精特性と実質的に異ならない該流体流中に運び去られる前記ウシ***細胞の前記ウシ***細胞受精特性を確立する工程を包含する、方法。
(項目11)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウシ種の雄からウシ***を獲得する工程を包含し、そして前記流体流圧の調整を介して***細胞受精特性を制御する前記工程が、該***中の該ウシ***細胞の該ウシ***細胞受精特性と実質的に同等である該流体流中に運び去られる該ウシ***細胞の該ウシ***細胞受精特性を確立する工程を包含する、方法。
(項目12)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウシ種の雄からウシ***を獲得する工程を包含し、そして制御された***細胞受精特性を有する***細胞授精サンプルを生成する前記工程が、該ウシ***中の該ウシ***細胞のウシ***細胞受精特性と実質的に異ならない該ウシ***細胞受精特性を有する該ウシ***細胞授精サンプルを生成する工程を包含する、方法。
(項目13)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウシ種の雄からウシ***を獲得する工程を包含し、そして制御された***細胞受精特性を有する***細胞授精サンプルを生成する前記工程が、該ウシ***中の該ウシ***細胞のウシ***細胞受精特性と実質的に同等である該ウシ***細胞受精特性を有する該ウシ***細胞授精サンプルを生成する工程を包含する、方法。
(項目14)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウシ種の雄からウシ***を獲得する工程を包含し、そして前記流体流のフロー特性を変化させて流体流圧を調整する前記工程が、該流体流の該フロー特性を調整して1平方インチ当たり約30ポンドと1平方インチ当たり約50ポンドとの間に流体流圧を調整する工程を包含する、方法。
(項目15)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウシ種の雄からウシ***を獲得する工程を包含し、そして前記流体流のフロー特性を変化させて流体流圧を調整する前記工程が、該流体流の該フロー特性を調整して1平方インチ当たり約30ポンドと1平方インチ当たり約40ポンドとの間に流体流圧を調整する工程を包含する、方法。
(項目16)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウシ種の雄からウシ***を獲得する工程を包含し、そして前記流体流のフロー特性を変化させて流体流圧を調整する前記工程が、該流体流の該フロー特性を調整して流体流圧を1平方インチ当たり約40ポンドに調整する工程を包含する、方法。
(項目17)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウマ種の雄からウマ***を獲得する工程を包含し、そして前記流体流圧の調整を介して***細胞受精特性を制御する前記工程が、該***中の該ウマ***細胞のウマ***細胞受精特性と実質的に異ならない、該流体流中に運び去られる該ウマ***細胞の該ウマ***細胞受精特性を確立する工程を包含する、方法。
(項目18)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウマ種の雄からウマ***を獲得する工程を包含し、そして前記流体流圧の調整を介して***細胞受精特性を制御する前記工程が、該***中の該ウマ***細胞のウマ***細胞受精特性と実質的に同等である、該流体流中に運び去られる該ウマ***細胞の該ウマ***細胞受精特性を確立する工程を包含する、方法。
(項目19)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウマ種の雄からウマ***を獲得する工程を包含し、そして制御された***細胞受精特性を有する***細胞授精サンプルを生成する前記工程が、該ウマ***中の該ウマ***細胞のウマ***細胞受精特性と実質的に異ならない、該ウマ***細胞受精特性を有するウマ***細胞授精サンプルを生成する工程を包含する、方法。
(項目20)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウマ種の雄からウマ***を獲得する工程を包含し、そして制御された***細胞受精特性を有する***細胞授精サンプルを生成する前記工程が、該ウマ***中の該ウマ***細胞のウマ***細胞受精特性と実質的に同等である、ウマ***細胞受精特性を有するウマ***細胞授精サンプルを生成する工程を包含する、方法。
(項目21)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウマ種の雄からウマ***を獲得する工程を包含し、そして前記流体流のフロー特性を変化させて流体流圧を調整する前記工程が、該流体流の該フロー特性を調整して1平方インチ当たり約30ポンドと1平方インチ当たり約50ポンドとの間に流体流圧を調整する工程を包含する、方法。
(項目22)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウマ種の雄からウマ***を獲得する工程を包含し、そして前記流体流のフロー特性を変化させて流体流圧を調整する前記工程が、該流体流の該フロー特性を調整して1平方インチ当たり約30ポンドと1平方インチ当たり約40ポンドとの間に流体流圧を調整する工程を包含する、方法。
(項目23)
項目1に記載の***細胞授精サンプルを生成する方法であって、哺乳動物の1種の雄から***を獲得する前記工程が、哺乳動物のウマ種の雄からウマ***を獲得する工程を包含し、そして前記流体流のフロー特性を変化させて流体流圧を調整する前記工程が、該流体流の該フロー特性を調整して1平方インチ当たり約40ポンドに流体流圧を調整する工程を包含する、方法。
(項目24)
項目1に記載の***細胞授精サンプルを生成する方法であって、該***細胞受精特性の1つが、***細胞運動性を含む、方法。
(項目25)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、ウシ***細胞運動性を含む、方法。
(項目26)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、ウマ***細胞運動性を含む、方法。
(項目27)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、***細胞生存力を含む、方法。
(項目28)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、ウシ***細胞生存力を含む、方法。
(項目29)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、ウマ***細胞生存力を含む、方法。
(項目30)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、制御された***細胞受精特性を有する該***細胞授精サンプルで授精される哺乳動物の前記種の雌の妊娠率を含む、方法。
(項目31)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、制御された***細胞受精特性を有するウシ***細胞授精サンプルで授精される哺乳動物のウシ種の雌の妊娠率を含む、方法。
(項目32)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、制御された***細胞受精特性を有するウマ***細胞授精サンプルで授精される哺乳動物のウマ種の雌の妊娠率を含む、方法。
(項目33)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、制御された***細胞受精特性を有する該***細胞授精サンプルで受精される卵母細胞の卵割率を含む、方法。
(項目34)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、制御された***細胞受精特性を有するウシ***細胞授精サンプルで受精されるウシ卵母細胞の卵割率を含む、方法。
(項目35)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、制御された***細胞受精特性を有するウマ***細胞授精サンプルで受精されるウマ卵母細胞の卵割率を含む、方法。
(項目36)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、制御された***細胞受精特性を有する***細胞授精サンプルで受精される卵母細胞の胚盤胞率を含む、方法。
(項目37)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、制御された***細胞受精特性を有するウシ***細胞授精サンプルで受精されるウシ卵母細胞の胚盤胞率を含む、方法。
(項目38)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記受精特性が、制御された***細胞受精特性を有するウマ***細胞授精サンプルで受精されるウマ卵母細胞の胚盤胞率を含む、方法。
(項目39)
項目31に記載の***細胞授精サンプルを生成する方法であって、制御された***細胞受精特性を有する前記ウシ***細胞授精サンプルが、約1×10 5 個と2×10 7 個との間のウシ***細胞を含む、方法。
(項目40)
項目31に記載の***細胞授精サンプルを生成する方法であって、制御された***細胞受精特性を有する前記ウシ***細胞授精サンプルが、約1×10 6 個と3×10 6 個との間のウシ***細胞を含む、方法。
(項目41)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記***細胞を染色する工程をさらに包含する、方法。
(項目42)
項目41に記載の***細胞授精サンプルを生成する方法であって、前記***細胞を染色する前記工程が、Hoechst33342で該***細胞を染色する工程を包含する、方法。
(項目43)
項目1に記載の***細胞授精サンプルを生成する方法であって、前記流体流中の液滴を生成する工程をさらに包含し、該液滴のいくらかが、前記***細胞の各々1つを含む、方法。
(項目44)
項目43に記載の***細胞授精サンプルを生成する方法であって、性形質に基づいて***細胞を識別する工程をさらに包含する、方法。
(項目45)
項目44に記載の***細胞授精サンプルを生成する方法であって、性形質に基づいて前記***細胞を識別する前記工程が、DNA含有量に基づいて該***細胞を識別する工程を包含する、方法。
(項目46)
項目44に記載の***細胞授精サンプルを生成する方法であって、性形質に基づいて前記***細胞を識別する前記工程が、***頭部容積に基づいて該***細胞を識別する工程を包含する、方法。
(項目47)
項目44に記載の***細胞授精サンプルを生成する方法であって、前記性形質に基づいて***細胞を分離する工程をさらに包含する、方法。
(項目48)
項目47に記載の***細胞授精サンプルを生成する方法であって、収集コンテナ中で制御された***細胞受精特性を有する該***細胞授精サンプルを収集する工程をさらに包含する、方法。
(項目49)
項目48に記載の***細胞授精サンプルを生成する方法であって、収集コンテナ中で制御された***細胞受精特性を有する該***細胞授精サンプルを収集する前記工程が、該収集コンテナ中に性選択された***細胞授精サンプルを収集する工程を包含する、方法。
(項目50)
項目49に記載の***細胞授精サンプルを生成する方法であって、前記性選択された***細胞授精サンプルが、人工授精の性別を選択された***細胞授精サンプルを含む、方法。
(項目51)
項目49に記載の***細胞授精サンプルを生成する方法であって、前記性選択された***細胞授精サンプルが、体外受精の性別を選択された***細胞授精サンプルを含む、方法。
(項目52)
項目49に記載の***細胞授精サンプルを生成する方法であって、前記性選択された***細胞授精サンプルが、細胞質内で性別を選択された***細胞注入サンプルを含む、方法。
(項目53)
性選択された***細胞受精を評価する方法であって、以下:
a.哺乳動物の1種の雄から***細胞を獲得する工程;
b.第1の処理条件に曝された性別を選択されたY染色体を持つ***細胞を提供する工程;
c.第2の処理条件に曝された性別を選択されたX染色体を持つ***細胞を提供する工程;
d.該第1の処理条件に曝された性別を選択された該Y染色体を持つ***細胞と第2の処理条件に曝された性別を選択された該X染色体を持つ***細胞の所定の比を有する授精サンプルを生成する工程;
e.該第1の処理条件に曝された該Y染色体を持つ***細胞と第2の処理条件に曝された該X染色体を持つ***細胞の該比を有する該授精サンプルで哺乳動物の該種の少なくとも1匹の雌を授精させる工程;
f.哺乳動物の該種の少なくとも1の雌から子孫を産生する工程;
g.哺乳動物の該種の少なくとも1の子孫の性比の該第1の処理条件に曝された該Y染色体を持つ***細胞と第2の処理条件に曝された該X染色体を持つ***細胞の該比との比較により該性別を選択された***細胞の受精を評価する工程
を包含する、方法。
(項目54)
項目53に記載の性別を選択された***細胞受精を評価する方法であって、前記第1の処理条件に曝された前記Y染色体を持つ***細胞と第2の処理条件に曝された前記X染色体を持つ***細胞の前記比が、該第1の処理条件に曝された該Y染色体を持つ***細胞と第2の処理条件に曝された該X染色体を持つ***細胞の数が実質的に等しいことを含む、方法。
(項目55)
項目53に記載の性別を選択された***細胞受精を評価する方法であって、哺乳動物の前記種の前記少なくとも1の雌の子孫の前記性比が、胚の性比を含む、方法。
(項目56)
項目53に記載の性別を選択された***細胞受精を評価する方法であって、哺乳動物の前記種の前記少なくとも1の雌の子孫の前記性比が、胎児の性比を含む、方法。
(項目56)
項目53に記載の性別を選択された***細胞受精を評価する方法であって、哺乳動物の前記種の前記少なくとも1の雌の子孫の前記性比が、産まれる子孫の性比を含む、方法。
(項目57)
項目53に記載の性別を選択された***細胞受精を評価する方法であって、前記哺乳動物の前記種の前記少なくとも1の雌が、十分な数の子孫を産生し、子孫の該性比を確立する、該種の雌の十分な数を含む、方法。
(項目58)
哺乳動物の種の雄からの***細胞の受精を評価する方法であって、以下:
a.哺乳動物の1種の少なくとも2の雄から***細胞を獲得する工程;
b.前記種の前記少なくとも2の雄の各々からの該***細胞を実質的に同じフローサイトメトリー処理に曝す工程;
c.該実質的に同じフローサイトメトリー処理に曝される哺乳動物の該種の該少なくとも2の雄の各々からの実質的に等しい数の***細胞混合物で哺乳動物の該種の少なくとも1の雌を授精する工程;
d.哺乳動物の該種の該少なくとも1の雌から胚を収集する工程;
e.哺乳動物の該種の少なくとも2の雄のどちらが各々の胚を生み出したかを決定する工程;ならびに
f.該少なくとも2の雄の各々により生み出される同等の数の胚に基づいて少なくとも哺乳動物の該種の雄に対する同等の受精をランク付けする工程
を包含する、方法。
(項目59)
項目58に記載の哺乳動物の種の雄から***細胞の受精を評価する方法であって、前記フローサイトメトリー処理が、性形質に基づいて前記少なくとも2の雄から該***細胞を分離する工程を包含する、方法。
(項目60)
項目58に記載の哺乳動物の種の雄から***細胞の受精を評価する方法であって、前記フローサイトメトリー処理が、前記少なくとも2の雄からの***細胞の性別を選択する工程を包含する、方法。
(項目61)
哺乳動物の種の雄からの***細胞の受精を評価する方法であって、以下:
a.哺乳動物の1種の少なくとも2の雄から***細胞を獲得する工程;
b.前記種の前記少なくとも2の雄の各々からの該***細胞を実質的に同じフローサイトメトリー処理に曝す工程;
c.該実質的に同じフローサイトメトリー処理に曝される哺乳動物の該種の該少なくとも2の雄の各々からの実質的に等しい数の***細胞混合物で卵母細胞を体外受精する工程;
d.該卵母細胞の該体外受精を介して生成される胚を収集する工程;
e.哺乳動物の該種の少なくとも2の雄のどちらが各々の胚を生み出したかを決定する工程;ならびに
f.該少なくとも2の雄の各々により生み出される同等の数の胚に基づいて少なくとも哺乳動物の該種の雄に対する同等の受精をランク付けする工程
を包含する、方法。
当然ながら、本発明のさらなる本質的な目的は、以降の本発明の説明において明確にされる。
Another broad object of the present invention may be to provide a method for assessing the comparative fertility of a sperm cell population. Certain embodiments of the invention evaluate the comparative fertility of sperm cells from different male species of mammalian species when each male-derived sperm cell is exposed to substantially the same flow cytometry treatment. Provide a method. Another embodiment of the invention provides a method for assessing the comparative fertility of sperm cells from the same male of a mammalian species exposed to different flow cytometry treatments. Certain embodiments of the present invention provide a method for demonstrating the comparative fertility of sperm cells having controlled fertilization properties.
For example, the present invention provides the following items.
(Item 1)
A method for generating a sperm cell insemination sample comprising:
a. Obtaining semen from a single male mammal;
b. Generating a fluid stream having flow characteristics;
c. Changing the flow characteristics of the fluid flow to adjust the fluid flow pressure;
d. Carrying the sperm cells into the fluid stream;
e. Controlling sperm cell fertilization properties via adjustment of the fluid flow pressure; and
f. Producing a sperm cell insemination sample with controlled sperm cell fertilization characteristics
Including the method.
(Item 2)
A method for producing a sperm cell insemination sample according to
(Item 3)
The method of generating a sperm cell insemination sample according to
(Item 4)
4. A method for producing a sperm cell insemination sample according to item 3, wherein the sheath fluid stream comprises a sheath fluid comprising phosphate buffered saline (PBS).
(Item 5)
4. A method for producing a sperm cell insemination sample according to item 3, wherein the sheath fluid stream comprises a sheath fluid containing a citrate buffer.
(Item 6)
6. A method for producing a sperm cell insemination sample according to item 5, wherein the citrate buffer comprises about 2.9% sodium citrate.
(Item 7)
4. A method for producing a sperm cell insemination sample according to item 3, wherein the sheath fluid stream comprises a sheath fluid containing a HEPES buffer.
(Item 8)
2. A method for producing a sperm cell insemination sample according to
(Item 9)
2. The method of generating a sperm cell insemination sample according to
(Item 10)
2. A method for producing a sperm cell insemination sample according to
(Item 11)
2. A method for producing a sperm cell insemination sample according to
(Item 12)
2. A method for producing a sperm cell insemination sample according to
(Item 13)
2. A method for producing a sperm cell insemination sample according to
(Item 14)
2. A method for producing a sperm cell insemination sample according to
(Item 15)
2. A method for producing a sperm cell insemination sample according to
(Item 16)
2. A method for producing a sperm cell insemination sample according to
(Item 17)
2. A method for producing a sperm cell insemination sample according to
(Item 18)
2. A method for producing a sperm cell insemination sample according to
(Item 19)
2. A method for producing a sperm cell insemination sample according to
(Item 20)
2. A method for producing a sperm cell insemination sample according to
(Item 21)
2. A method for producing a sperm cell insemination sample according to
(Item 22)
2. A method for producing a sperm cell insemination sample according to
(Item 23)
2. A method for producing a sperm cell insemination sample according to
(Item 24)
2. A method for producing a sperm cell insemination sample according to
(Item 25)
2. A method for producing a sperm cell insemination sample according to
(Item 26)
2. A method for producing a sperm cell insemination sample according to
(Item 27)
2. A method for producing a sperm cell insemination sample according to
(Item 28)
2. A method for producing a sperm cell insemination sample according to
(Item 29)
2. A method for producing a sperm cell insemination sample according to
(Item 30)
2. A method for producing a sperm cell insemination sample according to
(Item 31)
2. A method for producing a sperm cell insemination sample according to
(Item 32)
2. A method for producing a sperm cell insemination sample according to
(Item 33)
The method of generating a sperm cell insemination sample according to
(Item 34)
The method for producing a sperm cell insemination sample according to
(Item 35)
The method of generating a sperm cell insemination sample according to
(Item 36)
The method for producing a sperm cell insemination sample according to
(Item 37)
The method for producing a sperm cell insemination sample according to
(Item 38)
The method for producing a sperm cell insemination sample according to
(Item 39)
A method of generating a sperm cell insemination sample of claim 31, wherein the bovine sperm cell insemination sample having controlled sperm cell fertility characteristics, between about 1 × 10 5 cells and 2 × 10 7 cells A method comprising bovine sperm cells.
(Item 40)
A method of generating a sperm cell insemination sample of claim 31, wherein the bovine sperm cell insemination sample having controlled sperm cell fertility characteristics, between about 1 × 10 6 cells and 3 × 10 6 cells A method comprising bovine sperm cells.
(Item 41)
2. A method for producing a sperm cell insemination sample according to
(Item 42)
42. A method of generating a sperm cell insemination sample according to item 41, wherein the step of staining the sperm cell comprises a step of staining the sperm cell with Hoechst 33342.
(Item 43)
A method for producing a sperm cell insemination sample according to
(Item 44)
44. A method of generating a sperm cell insemination sample according to item 43, further comprising the step of identifying sperm cells based on sexual traits.
(Item 45)
45. A method of generating a sperm cell insemination sample according to item 44, wherein the step of identifying the sperm cell based on sex traits includes the step of identifying the sperm cell based on DNA content. .
(Item 46)
45. A method of generating a sperm cell insemination sample according to item 44, wherein the step of identifying the sperm cell based on a sexual trait includes the step of identifying the sperm cell based on a sperm head volume. Method.
(Item 47)
45. A method for producing a sperm cell insemination sample according to item 44, further comprising the step of separating sperm cells based on the sex trait.
(Item 48)
48. A method of producing a sperm cell insemination sample according to item 47, further comprising the step of collecting said sperm cell insemination sample having controlled sperm cell fertilization characteristics in a collection container.
(Item 49)
49. A method of producing a sperm cell insemination sample according to item 48, wherein said step of collecting said sperm cell insemination sample having controlled sperm cell fertilization characteristics in said collection container is sex selected in said collection container. Collecting a sperm cell insemination sample.
(Item 50)
50. A method for producing a sperm cell insemination sample according to item 49, wherein the sex-selected sperm cell insemination sample comprises a sperm cell insemination sample selected for sex of artificial insemination.
(Item 51)
50. A method of generating a sperm cell insemination sample according to item 49, wherein the sex-selected sperm cell insemination sample comprises a sperm cell insemination sample selected for in vitro fertilization sex.
(Item 52)
50. A method of generating a sperm cell insemination sample according to item 49, wherein the sex-selected sperm cell insemination sample comprises a sperm cell injection sample whose sex is selected in the cytoplasm.
(Item 53)
A method for evaluating fertilization of sperm cells selected for sex, comprising:
a. Obtaining sperm cells from a single male mammal;
b. Providing a sperm cell having a sex-selected Y chromosome exposed to a first treatment condition;
c. Providing a sperm cell having a sex-selected X chromosome exposed to a second treatment condition;
d. A predetermined ratio of sperm cells having the Y chromosome selected for sex exposed to the first treatment condition and sperm cells having the X chromosome selected for sex exposed to the second treatment condition; Generating an insemination sample;
e. At least one of the species of mammals in the insemination sample having the ratio of sperm cells having the Y chromosome exposed to the first treatment condition and sperm cells having the X chromosome exposed to a second treatment condition; Fertilizing one female;
f. Producing offspring from at least one female of the species of the mammal;
g. A sperm cell having the Y chromosome exposed to the first treatment condition of a sex ratio of at least one progeny of the species of the mammal and the sperm cell having the X chromosome exposed to a second treatment condition. Evaluating fertilization of sperm cells whose sex is selected by comparison with a ratio
Including the method.
(Item 54)
54. A method for evaluating fertilization of a sperm cell selected for the sex according to item 53, wherein the sperm cell having the Y chromosome exposed to the first treatment condition and the X exposed to the second treatment condition The ratio of sperm cells with chromosomes is substantially equal to the number of sperm cells with the Y chromosome exposed to the first treatment condition and sperm cells with the X chromosome exposed to the second treatment condition. A method that includes equality.
(Item 55)
54. A method of assessing sex-selected sperm cell fertilization according to item 53, wherein the sex ratio of the at least one female offspring of the species of mammal comprises an embryo sex ratio.
(Item 56)
54. A method for evaluating fertilized sperm cell fertilization according to item 53, wherein the sex ratio of the at least one female offspring of the species of the mammal comprises a sex ratio of a fetus.
(Item 56)
54. The method of evaluating sex-selected sperm cell fertilization according to item 53, wherein the sex ratio of the at least one female offspring of the species of the mammal comprises the sex ratio of the offspring produced.
(Item 57)
54. A method for evaluating fertilization of sperm cells selected for the sex according to item 53, wherein the at least one female of the species of the mammal produces a sufficient number of offspring, and the sex ratio of the offspring is determined. Establishing a method comprising a sufficient number of females of the species.
(Item 58)
A method for assessing fertilization of sperm cells from a male of a mammalian species, comprising:
a. Obtaining sperm cells from at least two males of one mammal;
b. Exposing said sperm cells from each of said at least two males of said species to substantially the same flow cytometry treatment;
c. Inseminating at least one female of the mammalian species with a substantially equal number of sperm cell mixtures from each of the at least two males of the mammalian species exposed to the substantially same flow cytometry treatment The step of:
d. Collecting embryos from the at least one female of the species of mammal;
e. Determining which at least two males of the species of the mammal produced each embryo; and
f. Ranking at least equivalent fertilization of the mammal to the male of the species based on the equivalent number of embryos produced by each of the at least two males
Including the method.
(Item 59)
59. The method of evaluating fertilization of sperm cells from a male of the mammalian species according to item 58, wherein the flow cytometry treatment separates the sperm cells from the at least two males based on sex traits. The method of inclusion.
(Item 60)
59. A method for assessing fertilization of sperm cells from a male of the mammalian species of item 58, wherein said flow cytometry treatment comprises selecting a sex of sperm cells from said at least two males. Method.
(Item 61)
A method for assessing fertilization of sperm cells from a male of a mammalian species, comprising:
a. Obtaining sperm cells from at least two males of one mammal;
b. Exposing said sperm cells from each of said at least two males of said species to substantially the same flow cytometry treatment;
c. In vitro fertilizing oocytes with a substantially equal number of sperm cell mixtures from each of the at least two males of the species exposed to the substantially same flow cytometry treatment;
d. Collecting embryos generated through the in vitro fertilization of the oocytes;
e. Determining which at least two males of the species of the mammal produced each embryo; and
f. Ranking at least equivalent fertilization of the mammal to the male of the species based on the equivalent number of embryos produced by each of the at least two males
Including the method.
Of course, further essential objects of the present invention will become apparent in the following description of the invention.
(V.本発明を実施するための様式)
種々の収集手順、操作手順、保存手順、輸送手順、分離手順または授精手順の文脈内で***細胞の生物学的特質、化学的特質、物理的特質、生理学的特質または機能的特質を維持、増強、アッセイ、試験または決定するための***または***細胞加工システム。
(V. Mode for carrying out the present invention)
Maintain and enhance the biological, chemical, physical, physiological or functional characteristics of sperm cells within the context of various collection procedures, operating procedures, storage procedures, transport procedures, separation procedures or insemination procedures A semen or sperm cell processing system for assaying, testing or determining.
本発明の実施形態は、上記で広範に定義されるような哺乳動物種から***細胞を入手する工程を包含し得る。次いで、***細胞は、流動特性を有する流体流中に同調され得る。導管内の流体流は、流体流の流体力学的(rhealogical)特性、流体流が流れる導管の構成または幾何学、ならびに流体流に適用される外力(例えば、静水圧、振動性振動、圧電性振動、加熱における振動など)によって影響を受ける流動特性を有する。 Embodiments of the invention can include obtaining sperm cells from a mammalian species as broadly defined above. The sperm cells can then be tuned into a fluid stream having flow characteristics. The fluid flow in the conduit can include the hydrodynamic characteristics of the fluid flow, the configuration or geometry of the conduit through which the fluid flow flows, and external forces applied to the fluid flow (eg, hydrostatic pressure, oscillatory vibration, piezoelectric vibration). And flow characteristics that are affected by vibrations in heating, etc.
重要なことには、流体流のこれらの流動特性は、導管内の流体を移動させるために必要な圧力の量に寄与する。非限定的な例として、フローサイトメトリーにおいて、流体は、比較的大きな交差部分領域内を移動し、次いで、分析インターフェースを越えて比較的小さい交差部分領域から最終収集点の範囲内を移動する。 Importantly, these flow characteristics of the fluid flow contribute to the amount of pressure required to move the fluid in the conduit. As a non-limiting example, in flow cytometry, fluid moves within a relatively large intersection area and then moves within a range of final collection points from a relatively small intersection area beyond the analysis interface.
流体流の流体力学的特性に沿ったこの型の構成または幾何学的配置は、局所的力(例えば、圧縮力、湾曲力(sheer force)など)生じ得、これは、粒子(例えば、流体流中に同調された***細胞)の物理的完全性に影響を有し得る。 This type of configuration or geometry along with the hydrodynamic properties of the fluid flow can produce local forces (eg, compressive forces, sheer forces, etc.) that can generate particles (eg, fluid flow May have an impact on the physical integrity of sperm cells synchronized in).
***細胞を分析、***細胞特性に基づいて分離、性選択するための方法、または他の賢明なプロセスとして、フローサイトメトリーまたは細胞分類に関わる構成要素または工程を包含する本発明のこれらの実施形態に関して、概念上の非限定的な流動細胞計測器または細胞分類機器が、図1によって示される。 These embodiments of the present invention include components or steps involved in flow cytometry or cell sorting as a method for analyzing, separating, selecting sex based on sperm cell characteristics, or other sensible process of sperm cells In terms, a conceptual non-limiting flow cytometer or cell sorter is shown by FIG.
流動細胞計測器または細胞分類機器は、図1によって示される構成要素(分析、分離、受精特性を制御するためか、または他の方法では処理される***細胞を、樹立または供給するように作動する***細胞供給源(1)が挙げられるが、これに限定されない)のすべてまたは一部を備える。 The flow cytometer or cell sorter operates to establish or supply the components shown by FIG. 1 (analysis, separation, control of fertilization characteristics or otherwise processed sperm cells) Including all or part of a sperm cell source (including but not limited to).
***細胞は、その***細胞がシース流体(3)のよって囲まれるような様式でノズル(2)内に堆積される。流動細胞計測器もしくは流動分類機器と互換性があり、かつ流動分析または加工中に***細胞に対して利用可能な環境を提供する任意のシース流体が、本発明と共に利用され得る。シース流体としては、リン酸緩衝化生理食塩水、クエン酸塩溶液(例えば、2.9%クエン酸ナトリウム溶液)、またはHEPES緩衝溶液を単独で含むかまたは種々の組み合わせ中に含むシース流体が挙げられるが、これらに限定されない。 Sperm cells are deposited in the nozzle (2) in such a manner that the sperm cells are surrounded by the sheath fluid (3). Any sheath fluid that is compatible with a flow cytometer or flow classification instrument and that provides an available environment for sperm cells during flow analysis or processing can be utilized with the present invention. Sheath fluids include sheath fluids that include phosphate buffered saline, citrate solutions (eg, 2.9% sodium citrate solution), or HEPES buffer solutions alone or in various combinations. However, it is not limited to these.
シース流体(3)は、通常は、いくつかのシース流体供給源(4)によって供給され、その結果、***細胞供給源(1)が***細胞を供給すると、シース流体(3)が同時にノズル(2)を通って供給される。この様式において、シース流体(3)は、細胞に対してシース流体環境を形成する。種々の流体が、いくらかの圧力にて流動細胞計測器に提供されるので、これらはノズル(2)の外へと流れ、そしてノズル開口部(5)で流れる。 The sheath fluid (3) is usually supplied by several sheath fluid sources (4) so that when the sperm cell source (1) supplies sperm cells, the sheath fluid (3) is simultaneously injected into the nozzle ( 2) is fed through. In this manner, the sheath fluid (3) forms a sheath fluid environment for the cells. As various fluids are provided to the flow cytometer at some pressure, they flow out of the nozzle (2) and through the nozzle opening (5).
発振器制御(7)によって非常に正確に制御され得る、ある型の発振器(6)を提供することによって、圧力波が、ノズル(2)内に確立され得、そしてノズル開口部(5)でノズル(2)を出て行くようにシース流体に伝わる。発振器(6)は、このように、シース流体(3)に対して作動するので、ノズル開口部(5)を出て行く流れ(8)は、最終的にかつ規則的に液滴(9)を形成する。細胞はシース流体環境に囲まれるため、液滴(9)は、それらの中に別個に単離された***細胞(10)を含み得る。 By providing a type of oscillator (6) that can be very precisely controlled by the oscillator control (7), a pressure wave can be established in the nozzle (2) and the nozzle at the nozzle opening (5) It is transmitted to the sheath fluid so as to leave (2). The oscillator (6) thus operates on the sheath fluid (3) so that the flow (8) exiting the nozzle opening (5) finally and regularly drops (9). Form. Since the cells are surrounded by a sheath fluid environment, the droplets (9) may contain sperm cells (10) isolated separately in them.
液滴(9)は、一般的に、単離された***細胞(10)を含むので、流動細胞計測器または細胞分類機器は、液滴(9)内に含まれる***細胞を識別する***細胞特性に基づいて液滴を識別しかつ分離し得る。このことは、***細胞感知システム(11)を通して達成される。***細胞感知システムは、少なくとも、各々の液滴(9)内に含まれる***細胞に応答するある型の検出器(12)を備える。 Since the droplet (9) generally contains isolated sperm cells (10), the flow cytometer or cell sorter will identify the sperm cells that identify the sperm cells contained within the droplet (9). Droplets can be identified and separated based on properties. This is achieved through the sperm cell sensing system (11). The sperm cell sensing system comprises at least a type of detector (12) that is responsive to sperm cells contained within each droplet (9).
***感知システム(11)の1つの型は、Johnsonに対する米国特許第5,135,759号(本明細書中で参考として援用される)に十分に考察されるような型である。Johnsonの特許が***細胞について説明するように、細胞感知システム(11)は、ある刺激物(例えば、レーザービーム(13))によって励起され得る特定の色素の相対的存在または相対的非存在に依存する作動を生じ得る。***細胞の各々の型が色素で染色され得るが、異なる長さのX染色体およびY染色体が、異なるレベルの染色を引き起こす。従って、***細胞に存在する色素の程度を感知することによって、X染色体保有***とY染色体保有***との間でそれらの異なる放射レベルにより識別することが可能である。代替的な光学システム、検出システムおよび***細胞分析システムが公知であり、これらもまた本発明に従って使用され得、そしてJohnsonの特許によって提供される説明が例示目的であることが意図され、その結果、本発明の多数かつ様々な用途が理解され得る。WO01/85913(本明細書中で参考として援用される)もまた参照のこと。 One type of sperm sensing system (11) is that which is fully discussed in US Pat. No. 5,135,759 to Johnson (incorporated herein by reference). As the Johnson patent describes sperm cells, the cell sensing system (11) depends on the relative presence or absence of certain dyes that can be excited by certain stimuli (eg, laser beam (13)). Can be activated. Although each type of sperm cell can be stained with a dye, different lengths of the X and Y chromosomes cause different levels of staining. Thus, by sensing the degree of pigment present in sperm cells, it is possible to distinguish between X- and Y-chromosome sperm by their different radiation levels. Alternative optical systems, detection systems, and sperm cell analysis systems are known and can also be used in accordance with the present invention, and the description provided by the Johnson patent is intended to be exemplary, so that Many and various applications of the present invention can be understood. See also WO 01/85913 (incorporated herein by reference).
流動細胞計測器または細胞分類機器分離技術において適切な細胞の最終的な分離および単離を達成するために、センサー(12)によって受け取られたシグナルは、所望の細胞がその液滴(9)内に存在するか否かに基づいて非常に素早く決定を行いかつ差動的に各々の液滴(9)を荷電し得る、ある型のソーター識別システム(14)に送られる。この様式において、ソーター識別システム(14)は、静電偏向板(15)が、液滴(9)が特定の***細胞特性を有する***細胞を含むか否かに基づいて液滴(9)を偏向するのを許可するように作動する。結果として、流動細胞計測器または細胞分類機器は、細胞が1以上の収集容器(16)に到着するのを引き起こすことによって細胞を分離するように作動する。従って、***細胞のある特性を感知することによって、流動細胞計測器または細胞分類機器は、特定の特性に基づいて細胞を識別し得、そしてそれらを適切な収集容器(16)に配置し得る。特定の流動細胞計測器または細胞分類機器において、X染色体保有***液滴は正に荷電され、従って、一方向に偏向する。Y染色体保有***液滴は負に荷電され、従って、他の方向に偏向する。そして不要な流れ(すなわち、分類し得ない細胞)は荷電されず、従って、吸引チューブなどへの偏向されない流れに収集される。 In order to achieve the final separation and isolation of the appropriate cells in a flow cytometer or cell sorter separation technique, the signal received by the sensor (12) allows the desired cell to be contained within its droplet (9). Is sent to a type of sorter identification system (14) that can make a very quick decision based on whether it is present and differentially charge each droplet (9). In this manner, the sorter identification system (14) causes the electrostatic deflector (15) to drop the droplet (9) based on whether the droplet (9) contains sperm cells having specific sperm cell characteristics. Operates to allow deflection. As a result, the flow cytometer or cell sorter operates to separate cells by causing them to arrive in one or more collection containers (16). Thus, by sensing certain characteristics of sperm cells, a flow cytometer or cell sorting instrument can identify cells based on specific characteristics and place them in the appropriate collection container (16). In certain flow cytometers or cell sorters, X chromosome bearing sperm droplets are positively charged and thus deflect in one direction. Y chromosome-bearing sperm droplets are negatively charged and therefore deflect in the other direction. Unnecessary flows (i.e. cells that cannot be sorted) are then not charged and are therefore collected in an unbiased flow to a suction tube or the like.
ここで、主に図2を参照すると、このプロセスがさらに理解され得る。この図に示されるように、ノズル(2)は、流れ(8)を放出し、この流れ(8)は、発振器(7)(図2には示さず)が原因で液滴(9)を形成する。細胞供給源(1)(図2には示さず)が、Johnsonによって記載されるように、染色され得る(または本発明の特定の実施形態において、DIC技術を使用する場合には染色され得ない)***細胞(10)を供給するので、色素(DIC技術が利用される場合には***頭部)に入射するレーザー(またはDIC技術を使用する場合には照明源)(13)によって生じるビームによって生じる発光は、センサー(12)によって差動的に測定され、その結果、各々の液滴(9)の電荷の存在または非存在が、流れ(8)から分離しながら流動細胞計測器によって制御され得る。この制御は、液滴(9)の内容物に基づいて、正に荷電した液滴(9)、負に荷電した液滴(9)、および荷電していない液滴(9)を生じる。図2に示されるように、特定の液滴は、偏向された液滴(17)として示される。これらの偏向された液滴(17)は、一方または他方の性であり得る***細胞(10)を含む液滴である。次いで、これらは、適切な収集器(16)に堆積され、これによって、性選択された***細胞の集団が生成される。 Referring now mainly to FIG. 2, this process can be further understood. As shown in this figure, the nozzle (2) emits a stream (8) which causes the droplet (9) to be caused by the oscillator (7) (not shown in FIG. 2). Form. The cell source (1) (not shown in FIG. 2) can be stained as described by Johnson (or in certain embodiments of the invention, cannot be stained when using DIC technology). ) Providing sperm cells (10) so that the beam produced by the laser (or illumination source if using DIC technology) (13) incident on the dye (sperm head if DIC technology is used) The resulting luminescence is differentially measured by the sensor (12) so that the presence or absence of charge on each droplet (9) is controlled by the flow cytometer while separating from the flow (8). obtain. This control results in a positively charged droplet (9), a negatively charged droplet (9), and an uncharged droplet (9) based on the contents of the droplet (9). As shown in FIG. 2, the particular droplet is shown as a deflected droplet (17). These deflected droplets (17) are droplets containing sperm cells (10) that can be of one or the other sex. These are then deposited in an appropriate collector (16), thereby producing a population of sex-selected sperm cells.
流体流が、流動細胞計測器、細胞分類器、または***細胞を流体流内に同調する他のデバイス内で生じるにせよ、流れの流動特性は特徴付けられ得、そして流体流の流動特性を変えるための調整手段が、力(例えば、圧縮力、湾曲力(sheer force)など)を増大または低下させるために導入され得、その結果、流体流に同調された粒子が、物理的に、生理的に、機能的に、または機械的に変化され得る。 Whether the fluid flow occurs in a flow cytometer, cell classifier, or other device that synchronizes sperm cells into the fluid flow, the flow properties of the flow can be characterized and change the flow properties of the fluid flow Adjustment means for adjusting the force (eg, compressive force, sheer force, etc.) can be introduced so that the particles tuned to the fluid flow are physically and physiologically It can be changed functionally or mechanically.
従って、流動経路について選択的に調整可能な範囲の流体流特性が、調整手段を使用して生じられ得、増分測定として表され得る。例えば、流動細胞計測器の文脈内または細胞分類機器の文脈内での流体流特性の変化は付加的に調整され得、1平方インチ当たりのポンドで測定され、代表的には、流体流速度もしくはシース流体速度の相応する増加または減少を伴って、約20ポンド/平方インチと100ポンド/平方インチとの間で流体流圧における付加的な増加または減少を可能にする。 Thus, a range of fluid flow characteristics that can be selectively adjusted for the flow path can be generated using the adjustment means and expressed as incremental measurements. For example, changes in fluid flow characteristics within the context of a flow cytometer or within the context of a cell sorting instrument can be additionally adjusted, measured in pounds per square inch, typically fluid flow velocity or Allows an additional increase or decrease in fluid flow pressure between about 20 pounds per square inch and 100 pounds per square inch with a corresponding increase or decrease in sheath fluid velocity.
本発明の特定の実施形態に従って、特定の種の哺乳動物の***細胞が、適切な流体流流動特性を有する流体流に同調される。次いで、流体流の流動特性が、同調された***細胞が生存能力を維持する段々と測定された範囲にわたって、選択的に調整される。次いで、***細胞受精特性が、複数の***細胞サンプルの各々について評価され、測定された範囲内で生じた複数の流動特性の各々に相当すると解釈される。 In accordance with certain embodiments of the present invention, mammalian sperm cells of a particular species are tuned to a fluid flow having appropriate fluid flow characteristics. The flow characteristics of the fluid flow are then selectively adjusted over the progressively measured range where the synchronized sperm cells remain viable. The sperm cell fertilization characteristics are then evaluated for each of the plurality of sperm cell samples and interpreted to correspond to each of the plurality of flow characteristics generated within the measured range.
その後、哺乳動物種または哺乳動物種の個々のメンバー由来の***細胞に関する***細胞受精特性が制御され得、所望の***細胞受精特性を有する***細胞授精サンプルが、生成され得る。 Thereafter, sperm cell fertilization characteristics for sperm cells from mammalian species or individual members of the mammalian species can be controlled, and sperm cell insemination samples having the desired sperm cell fertilization characteristics can be generated.
例えば、6頭の雄ウシ(bull)の各々由来の***細胞を、Hoechst33342で34℃にて45分間染色し、そして30ポンド/平方インチ、 40psi、または50psiの圧力を有する流体流を用いて、約95%の精度で、X染色体保有集団またはY染色体保有集団(あるいは両方)に大量分類(bulk−sort)(部分集団への分類を行わない流動細胞計測器また細胞分類機器を通して)するか、または内径70μmのノズルを有する流動細胞計測器を用いて分類した。50psiから30psiへの流体流圧力の減少は、分類速度をわずか2〜3%しか低下させなかった。 For example, sperm cells from each of six bulls are stained with Hoechst 33342 at 34 ° C. for 45 minutes and using a fluid stream having a pressure of 30 pounds per square inch, 40 psi, or 50 psi, Do bulk-sort (through a flow cytometer or cell sorter that does not classify into subpopulations) into X population or Y chromosome population (or both) with about 95% accuracy, Or it classified using the flow cytometer which has a nozzle with an internal diameter of 70 micrometers. A decrease in fluid flow pressure from 50 psi to 30 psi reduced the classification rate by only 2-3%.
その後、***細胞を5℃まで冷却し、そして遠心分離によって濃縮し、100μlカラム当たり約2×106総***細胞で0.25mlストローに充填し、そして分類されていないコントロールと共に蒸気凍結方法を使用して凍結させた。その後、そのストロー中の***細胞を解凍した。 The sperm cells are then cooled to 5 ° C. and concentrated by centrifugation, loaded into a 0.25 ml straw with approximately 2 × 10 6 total sperm cells per 100 μl column, and using the vapor freezing method with unclassified controls And then frozen. Thereafter, the sperm cells in the straw were thawed.
次いで、***細胞を、進行性の運動性については解凍30分後および120分後に2人の観察者によって盲目的に、ならびに解凍105分後に流動細胞計測器によって、生存***細胞パーセントについてはPI染色によって、ならびにHamilton Thorneシステムを使用して解凍後120分後にCASA分析によって、種々の***細胞特性に関して評価した。全体の手順を2回繰り返した。 Sperm cells were then blinded by two observers 30 minutes and 120 minutes after thawing for progressive motility and by flow cytometer after 105 minutes thawing, and PI staining for percent viable sperm cells. As well as by CASA analysis 120 minutes after thawing using the Hamilton Thorne system and evaluated for various sperm cell properties. The entire procedure was repeated twice.
階乗ANOVAは、雄ウシおよび圧力効果の両方が有意であったことを示した(P<0.005、表1)。 Factorial ANOVA showed that both bull and pressure effects were significant (P <0.005, Table 1).
(表1.分類中の異なるシステム圧力に対する解凍後の***の応答a) (Table 1. Sperm response after thawing to different system pressures during classification a )
*側頭部変位の振幅
より大きい数は、硬さがより低くかつより正常な運動性を意味する。すべての応答において、雄ウシ間で典型的な相違があった。しかし、1つを例外として、処理による雄ウシの相互作用は小さく、このことは、知見が集団におけるほとんどの雄ウシに同様に当てはまることを意味する。圧力が増加するように漸進的に調整された流体流の流動特性は、実質的に測定されたすべての***細胞受精特性に影響を及ぼしたが、高度に統計上有意なもののみが、表1にある。
* A number greater than the amplitude of temporal displacement means lower hardness and more normal motility. There were typical differences between the bulls in all responses. However, with one exception, the bull's interaction with the treatment is small, which means that the findings apply equally to most bulls in the population. The flow characteristics of the fluid flow adjusted progressively to increase the pressure affected virtually all measured sperm cell fertilization characteristics, but only those that are highly statistically significant are shown in Table 1. It is in.
理解され得るように、約50psiで採取された***細胞サンプルと約40psiで採取された生細胞サンプルとの間には、***細胞の受精能の特性における大きな変化が存在し、次いで、約40psiと約30psiとの間の遙かに小さな変化が存在する。このことは、***細胞受精能特性に対する効果が、線形的ではあり得ないことを示す。30psiにおいて記載されるフロー特性に曝されるウシ***細胞に関しては、***細胞受精能特性は、非ソートコントロールと実質的に同じであったか、または非ソートコントロールに匹敵し、およびいくつかのよりよい応答(***細胞が、ウシ種の雌の授精または人工授精のために使用される場合)について、同様であった。類似の手順を、類似の結果および結論を有する種付けウシから得られた***細胞を用いて行った。 As can be seen, there is a significant change in the sperm cell fertility characteristics between a sperm cell sample taken at about 50 psi and a live cell sample taken at about 40 psi, followed by about 40 psi. There is a much smaller change between about 30 psi. This indicates that the effect on sperm cell fertility characteristics cannot be linear. For bovine sperm cells exposed to the flow characteristics described at 30 psi, the sperm cell fertility characteristics were substantially the same as or comparable to non-sorted controls and some better responses The same was true (when sperm cells were used for insemination of bovine females or artificial insemination). A similar procedure was performed using sperm cells obtained from seeded cattle with similar results and conclusions.
***細胞受精能特性は、制御され得、哺乳動物から得られた***細胞に関し得る。大部分の哺乳動物種について、流体ストリーム特性を変化させて、流体ストリーム圧を漸増して低下させることは、フローサイトメトリーまたは他の方法の状況におけるかどうかに拘わらず、***細胞受精能特性を変化させた対応する等級付けした***細胞サンプルを生じ得る。これは、以下に記載されるように、人工授精、体外受精、または細胞質内注入を含む種々の手順のために使用され得る。 Sperm cell fertility characteristics can be controlled and can relate to sperm cells obtained from mammals. For most mammalian species, changing the fluid stream characteristics and gradually decreasing the fluid stream pressure, regardless of whether in flow cytometry or other method contexts, results in sperm cell fertility characteristics. An altered corresponding graded sperm cell sample can be generated. This can be used for various procedures including artificial insemination, in vitro fertilization, or intracytoplasmic injection, as described below.
本発明は、二項応答(例えば、妊娠/非妊娠)を評価するために別の試験を提供する。この応答は、代表的には、処置の差異がかなり大きい場合を除いて、統計的有意性を得るために1回の処置あたり多数の動物を要する。処置の差異に起因して性別選択された***の***細胞受精能特性における差異を増幅し得る本発明の一実施形態は、授精前に、異なる処理の***または雄の***を混合し、そして各雄または処理に由来する胚、胎仔または子孫の生成を決定する、競合的な、または不均一***の(heterospermic)受精能を含む。 The present invention provides another test for assessing binomial responses (eg, pregnancy / non-pregnancy). This response typically requires a large number of animals per treatment to obtain statistical significance, unless the treatment differences are quite large. One embodiment of the invention that can amplify differences in sperm cell fertility characteristics of sex-selected sperm due to treatment differences is to mix sperm of different treatments or male sperm prior to insemination, and Includes competitive or heterospermic fertility, which determines the production of embryos, fetuses or offspring from males or treatments.
例えば、***細胞をフローサイトメトリーによってまたは2つの異なる流体ストリーム圧でのDNA含有量についての細胞ソーティングによって性別選択した後の受精能は、遺伝子マーカーとして性別を使用する不均一***の授精を使用して評価され得る。2匹の雄ウシの各々に由来する***細胞を、X染色体保有集団またはY染色体保有集団にソートし、すなわち両方を、30psiまたは50psiのいずれかに調節した流体ストリーム圧によって約95%の正確度で、ソートした。遠心分離によりソート後の***細胞を濃縮した後、30psiでソートした1×106のX染色体保有***細胞を、各雄ウシについて50psiでソートした1×106Y染色体保有***細胞と一緒に0.25mLのストローに入れ、同様に他のストローにおいては、逆を行った:30psiでの1×106Y***+50psiでの1×106 X***。これらの***細胞は、ソートされていないコントロールとともに、次いで凍結し、数ヶ月後に融解し、85頭のホルスタイン未経産牛の子宮体内で授精させ、12または24時間後のいずれかには、2回の授精にわたってバランスを保った亜群で発情期を観察した。 For example, fertility after sex selection of sperm cells by flow cytometry or by cell sorting for DNA content at two different fluid stream pressures uses heterogeneous sperm insemination using gender as a genetic marker. Can be evaluated. Sperm cells from each of two bulls are sorted into X-chromosome-bearing populations or Y-chromosome-bearing populations, ie, approximately 95% accuracy by fluid stream pressure adjusted to either 30 psi or 50 psi And sorted. After enrichment of the sorted sperm cells by centrifugation, 1 × 10 6 X chromosome-bearing sperm cells sorted at 30 psi were combined with 1 × 10 6 Y chromosome-bearing sperm cells sorted at 50 psi for each bull. Place in a 25 mL straw, as well as in the other straw, the reverse was done: 1 × 10 6 Y sperm at 30 psi + 1 × 10 6 X sperm at 50 psi. These sperm cells, along with unsorted controls, were then frozen, thawed months later, fertilized in the uterus of 85 Holstein heifers, and after either 12 or 24 hours, 2 The estrus was observed in subgroups that maintained a balance across the insemination.
授精2ヶ月後、43頭の未経産牛のうちの81%が妊娠し、30psiで処理した***の性別に対応する性別の胎仔(超音波により決定された)を妊娠した。このことは、2つの圧力でソートされた***細胞の***細胞受精能特性に差異があった場合、予測された50:50性別比とは異なったことを示す(P<0.01)。2×106***/用量における性別選択された***での妊娠率は、51%(43/85)であり;これは、同じ射出物に由来する20×106の雌雄選別されていない***/用量の制御に類似した(39%(9/23))。 Two months after insemination, 81% of the 43 heifers became pregnant and had sex-specific fetuses (determined by ultrasound) corresponding to the sex of sperm treated at 30 psi. This indicates that when there was a difference in sperm cell fertility characteristics of sperm cells sorted at the two pressures, it was different from the predicted 50:50 sex ratio (P <0.01). The pregnancy rate with sex-selected sperm at 2 × 10 6 sperm / dose is 51% (43/85); this is 20 × 10 6 unsexed sperm / Similar to dose control (39% (9/23)).
本発明の別の実施形態は、卵割速度および制御された***細胞受精能特性を有する***細胞を使用する胚盤胞形成の速度を変化させる方法を提供する。2つのウシ***細胞サンプル(各々、制御された受精能特性を有する)を、それぞれ、40psiおよび50psiにてウシ***細胞をフローソーティングすることによって生成した。受精培地中での***細胞濃度の用量応答を、各***細胞サンプルに由来するX染色体保有***細胞およびY染色体保有***細胞を用いて行った。従って、2流体ストリーム圧、3つの***細胞濃度(1×106***/ml、0.33×106***/mlおよび0.11×106***/ml)、6頭の雄牛および2種の性別を含む多因子性手順を行い得る。 Another embodiment of the present invention provides a method of altering the rate of blastocyst formation using sperm cells with cleavage rates and controlled sperm cell fertility characteristics. Two bovine sperm cell samples (each with controlled fertility characteristics) were generated by flow sorting bovine sperm cells at 40 psi and 50 psi, respectively. A dose response of sperm cell concentration in the fertilization medium was performed using X chromosome-bearing sperm cells and Y chromosome-bearing sperm cells derived from each sperm cell sample. Accordingly, second fluid stream pressure, three sperm cell concentration (1 × 10 6 sperm /Ml,0.33×10 6 sperm / ml and 0.11 × 10 6 sperm / ml), of 6 animals bull and two A multifactorial procedure involving gender of
約2,000個の卵母細胞を、屠殺場の卵巣からの約2mm〜約8mmの卵胞から吸引した。化学的に規定された培地(CDM)を、Journal of Animal Sciences,78:152−157(2000)(本明細書中に参考として援用される)によって記載されるように全体を通して使用した。成熟は、M−CDM(0.5% FAF−BSA、15ng/ml NIDDK−oFSH−20、1μg/ml USDA−LH−B−5、0.1μg/ml E2、50ng/μl EGFおよび0.1mM システアミンを補充)中で、38.8℃および空気中5% CO2において23時間の間に起こった。2×106細胞/ストローで凍結した、ソートした***細胞を融解し、2mlの45% および2mlの90% Percoll勾配を通して、20分間、400gで遠心分離した。次いで、上清を廃棄し、2mlのFCDM(0.5% FAF−BSA、2mM カフェインおよび0.02% ヘパリンを補充)を***ペレットに添加し、500gにて5分間遠心分離した。その上清を廃棄し、約50μlの***懸濁液を残した。成熟卵母細胞を、FCDM中で1回洗浄し、鉱油の下にあるFCDMの25μlの液滴の中に、5μlで15の群に移した。受精は、一滴あたり10μlの***懸濁液を38.8℃および空気中5% CO2にて18時間添加することによって起こった。予定運命の接合体を、CDM1中で2日間、およびCDM2中で4.5日間、38.5℃、5% O2、5% CO2および90% N2中で培養した。7.5日目に、胚盤胞発生を評価した:品質1〜4(1は、優秀および4は、不十分)および発生段階6〜8(6は、完全、6.5は拡張している、7は拡張した、7.5は脱出、および8は脱出した胚盤胞)。データ(表1)は、ANOVAおよびアークサイン変換後の一次偏差(first deviation)によって分析された。 About 2,000 oocytes were aspirated from about 2 mm to about 8 mm follicles from the slaughterhouse ovaries. Chemically defined medium (CDM) was used throughout as described by Journal of Animal Sciences, 78: 152-157 (2000), incorporated herein by reference. Maturation was achieved using M-CDM (0.5% FAF-BSA, 15 ng / ml NIDDK-oFSH-20, 1 μg / ml USDA-LH-B-5, 0.1 μg / ml E 2 , 50 ng / μl EGF and 0. Happened for 23 hours at 38.8 ° C. and 5% CO 2 in air. Sorted sperm cells, frozen at 2 × 10 6 cells / straw, were thawed and centrifuged through 2 ml 45% and 2 ml 90% Percoll gradient for 20 minutes at 400 g. The supernatant was then discarded and 2 ml FCDM (supplemented with 0.5% FAF-BSA, 2 mM caffeine and 0.02% heparin) was added to the sperm pellet and centrifuged at 500 g for 5 minutes. The supernatant was discarded, leaving about 50 μl of sperm suspension. Mature oocytes were washed once in FCDM and transferred to groups of 15 in 5 μl into 25 μl droplets of FCDM under mineral oil. Fertilization occurred by adding 10 μl of sperm suspension per drop for 18 hours at 38.8 ° C. and 5% CO 2 in air. Conjugates of expected fate were cultured in CDM1 for 2 days and in CDM2 for 4.5 days at 38.5 ° C., 5% O 2 , 5% CO 2 and 90% N 2 . On day 7.5, blastocyst development was assessed: quality 1-4 (1 is excellent and 4 is insufficient) and developmental stages 6-8 (6 is complete, 6.5 is expanded) 7 is expanded, 7.5 is prolapsed, and 8 is prolapsed blastocyst). The data (Table 1) was analyzed by ANOVA and first deviation after arcsine transformation.
卵割(53.6および43.6%)ならびに胚盤胞(18.2および14.7%)の割合は、約50psiよりも約40psiで得られた制御された***細胞特性を有する***細胞を利用する手順についてより高かった(P<0.01)。用量と圧力との間には何ら相互作用はなく;従って、各***濃度で圧力を低くすることは類似の利点があった。卵割および胚盤胞生成についての***細胞濃度の明らかな用量応答が見いだされた(表2)。また、両方の応答について雄牛の中で大きな差異(P<0.01)があり、卵割%について雄牛×用量相互作用があった(P<0.01)。このデータは、***用量が何頭かの雄牛について>1.0×106/mlであるべきであることを示す。胚の品質は、X***よりもY***がより高かった(P<0.01)(1.12 対 1.57)。他は、胚を性別鑑別した場合に、IVF胚についてこのことを示した。およびこの効果は、いまや、性別鑑定された***で確認された。 The percentage of cleavage (53.6 and 43.6%) and blastocysts (18.2 and 14.7%) are sperm cells with controlled sperm cell properties obtained at about 40 psi over about 50 psi It was higher for the procedure using (P <0.01). There was no interaction between dose and pressure; therefore, lowering the pressure at each sperm concentration had similar advantages. A clear dose response of sperm cell concentration for cleavage and blastocyst production was found (Table 2). There was also a big difference among the bulls for both responses (P <0.01) and there was a bull × dose interaction for the percent cleavage (P <0.01). This data indicates that the sperm dose should be> 1.0 × 10 6 / ml for some bulls. Embryo quality was higher in Y sperm than in X sperm (P <0.01) (1.12 vs. 1.57). Others showed this for IVF embryos when the embryos were gender-differentiated. And this effect is now confirmed in gender-determined sperm.
(表2.雄牛によって提示された、1卵母細胞あたりの卵割(%、C)および胚盤胞(%、B)データ) (Table 2. cleavage (%, C) and blastocyst (%, B) data per oocyte presented by the bull)
**ソートされた***の受精能は、フローサイトメトリーによる***ソーティングの間の機械的損傷に部分的に起因して、ソートされていないコントロール***に比較して低かった。システム圧力を低下させることにより、IVFにおける***品質および受精能の両方が改善した。現在の研究は、***ソーティングの間のシステム圧力の影響を評価し、ICSI後の胚発生時の卵母細胞の成熟を長期化した。3頭の雄牛の各々に由来する***を、34℃で125μM Hoechst 33342で45分間染色し、40psiまたは50psiのSX MoFlo(登録商標)ソーターの圧力を用いて、95%正確度でX染色体保有集団およびY染色体保有集団にソートし、次いで、低温保存した。1mlのCDM1(0.5% FAF−BSA、2mM グルコース、50ng/ml EGF、15ng/ml NIDDK−oFSH−20、1μg/ml USDA−LH−B−5、1μg/ml E2および0.1mM システアミンを補充)を有するウェルあたり、屠殺場の卵巣から得た50個のウシ卵母細胞を入れ、次いで、38.5℃、空気中5% CO2で24時間または30時間にわたって成熟させた。成熟卵母細胞の卵丘細胞(cumulus cell)を、ボルテックスすることにより除去し、極体を有する卵母細胞を、選択した。ソートした凍結融解***からの運動性の***を、45%および90%のPercollの各2mlによる遠心分離により回収し、その濃度を4×106/mlに調節した。成熟卵母細胞を、Piezo注射システムを使用して、2つの注射群(ICSIおよび偽注射)に分けた。***注射ピペットの外径は、8〜10μmであった。全ての操作を、室温(24〜25℃)にて行った。注射後、卵母細胞を、5μM イオノマイシンで4分間活性化させ、5%CO2,5%O2および90% N2の下で、50μlのCDM1中、38.5℃にて培養し、注射後72時間で卵割について評価した。ICSIおよび偽注射群からの卵割していない卵母細胞を、オルセインで染色し、受精状態について評価した。卵割した胚をさらに培養し、胚盤胞発生を、注射後7.5日目に評価した。データを、ANOVAに供し;アークサイン変換を、%データについて使用した。
** The fertility of sorted spermatozoa was low compared to unsorted control sperm, in part due to mechanical damage during sperm sorting by flow cytometry. Reducing system pressure improved both sperm quality and fertility in IVF. Current studies evaluated the impact of system pressure during sperm sorting and prolonged oocyte maturation during embryonic development after ICSI. Sperm from each of three bulls was stained with 125 μM Hoechst 33342 for 45 minutes at 34 ° C. and retained X chromosome with 95% accuracy using 40 psi or 50 psi SX MoFlo® sorter pressure. Sorted into population and Y-chromosome bearing population, then cryopreserved. 1 ml of CDM1 (0.5% FAF-BSA, 2 mM glucose, 50 ng / ml EGF, 15 ng / ml NIDDK-oFSH-20, 1 μg / ml USDA-LH-B-5, 1 μg / ml E2 and 0.1 mM cysteamine Fifty bovine oocytes obtained from slaughterhouse ovaries were placed per well with (supplemented) and then matured at 38.5 ° C., 5% CO 2 in air for 24 or 30 hours. Mature oocyte cumulus cells were removed by vortexing, and polar oocytes were selected. Motile sperm from sorted freeze-thawed semen was collected by centrifugation with 2 ml each of 45% and 90% Percoll, and the concentration was adjusted to 4 × 10 6 / ml. Mature oocytes were divided into two injection groups (ICSI and sham injection) using the Piezo injection system. The outer diameter of the sperm injection pipette was 8-10 μm. All operations were performed at room temperature (24-25 ° C.). After injection, the oocytes were activated with 5 μM ionomycin for 4 minutes and cultured at 38.5 ° C. in 50 μl CDM1 under 5% CO 2 , 5% O 2 and 90% N 2 and injected The cleavage was evaluated 72 hours later. Unbroken oocytes from ICSI and sham injection groups were stained with orcein and evaluated for fertilization status. The split embryos were further cultured and blastocyst development was assessed 7.5 days after injection. Data was subjected to ANOVA; arcsine transformation was used for the% data.
24時間成熟卵母細胞を用いると、40psiでソートした***と、50psiでソートした***との間には、卵割割合についても胚盤胞割合についても何ら差異はなく(P>0.1)、圧力×雄牛相互作用もなかった。研究した全ての応答について、雄牛の有意な影響はなかった(P<0.05)。40psiでソートした***を注射した場合、30時間にわたって成熟させた卵母細胞は、24時間成熟卵母細胞よりも高い卵割割合を生じ(22.9% 対 12.2%、P<0.05)、胚盤胞割合においても何ら差異はなかった(P>0.1)。全体的な胚盤胞発生は、偽注射においてよりもICSIにおいてより高かった(7.5% 対 1.3%、P<0.05)。24時間成熟から卵割していない卵母細胞を、受精状態に関して評価した場合、ICSIは、偽注射と比較して、2つの極体および/または脱凝集***を有するより高いパーセンテージを示した(15.7% 対 1.7%,P<0.05)。30時間成熟卵母細胞を用いても、それらの2群の間の受精状態において何ら差異はなかった。本発明者らは、40psi 対 50psiでソートした運動性***を使用するICSI後に、卵割にも胚盤胞への発生にも何ら差異はないことを結論づける。 With 24-hour matured oocytes, there is no difference in the cleavage rate or blastocyst rate between sperm sorted at 40 psi and sperm sorted at 50 psi (P> 0.1) There was also no pressure x bull interaction. There was no significant effect of bulls on all responses studied (P <0.05). When injected with sperm sorted at 40 psi, oocytes matured for 30 hours produced a higher cleavage rate than 24-hour matured oocytes (22.9% vs 12.2%, P <0. 05), there was no difference in the blastocyst ratio (P> 0.1). Overall blastocyst development was higher in ICSI than in sham injection (7.5% vs. 1.3%, P <0.05). When oocytes that have not been cleaved from 24-hour maturity were evaluated for fertilization status, ICSI showed a higher percentage with two polar bodies and / or disaggregated sperm compared to sham injection ( 15.7% vs 1.7%, P <0.05). There was no difference in fertilization status between the two groups using 30 hour matured oocytes. We conclude that there is no difference in cleavage or blastocyst development after ICSI using motile sperm sorted at 40 psi versus 50 psi.
本発明の別の実施形態において、遺伝子マーカーとしての性別を使用する不均一***の授精を使用して、雄の受精能をランク付けし得、***性別鑑定に関係しない***処理の受精能をランク付けし得る。***機能の現在のインビトロ試験は、雄の受精能と高くは相関せず、均一***(homospermic)授精は、正確な受精能データを得るために、1回の処理につき、数百回もの授精を要する。2頭以上の雄牛の***を混合する不均一***の授精は、試験された大部分の種における相対的受精能の正確な予測を提供する。 In another embodiment of the present invention, heterogeneous sperm insemination using gender as a genetic marker can be used to rank male fertility and rank fertility for sperm processing not related to sperm sex testing. It can be attached. Current in vitro tests of sperm function do not correlate well with male fertility, and homospermic insemination uses hundreds of inseminations per treatment to obtain accurate fertility data. Cost. Insemination of heterogeneous sperm that mixes two or more bull spermatozoa provides an accurate prediction of relative fertility in most species tested.
凍結された、4頭の雄牛の4群からのフローソートした***を融解し、群内での3頭の全ての組み合わせ(ABC、ABD、ACD、BCD)において発情期が 始まって12時間または24時間後に、未経産牛に授精させた。同数の前進運動性の***を、融解後の合計600,000の運動性***を各雄牛から授精させた。各注入物の半分を、各子宮角に入れた。胚を、発情して14.5日後〜20日後に非外科的に回収した。回収により、332頭の未経産牛から165の伸長した胚を得た(48%)。多型DNAマーカーを使用して胚を遺伝子型決定し、各胚の生検の種牛を決定した。遺伝子型決定後、165個の胚のうち、118個を、特定の種牛に割り当てることができた。各雄牛群をランク付けするための不均一***指数を、最尤分析定理を使用して計算した。群内の各雄牛を、これらの指数に基づいてランク付けした(表1)。群1において、最も乏しい雄牛の受精能は、2つの他の雄牛よりも有意に低かった(P<0.05)。群2において、優性の雄牛は、最も高い指数を有した(P<0.05)。類似の区別は、群3および4において行うことができた。しかし、その群の3つにおいて、何頭かの雄牛の受精能は、明らかに高くも低くもなかった(P>0.05)。
(表1.群内の個々の雄牛の不均一***指数±SE)
Thawed flow-sorted sperm from 4 groups of 4 bulls that were frozen, 12 hours after the beginning of estrus in all 3 combinations (ABC, ABD, ACD, BCD) in the group or After 24 hours, heifers were inseminated. The same number of forward motility spermatozoa was inseminated from each bull with a total of 600,000 motile spermatozoa after thawing. Half of each injection was placed in each uterine horn. Embryos were harvested non-surgically 14.5 to 20 days after estrus. Harvesting yielded 165 elongated embryos from 332 heifers (48%). Embryos were genotyped using polymorphic DNA markers and the biopsy seed of each embryo was determined. After genotyping, 118 out of 165 embryos could be assigned to a specific breeding cow. A heterogeneous sperm index for ranking each bull herd was calculated using the maximum likelihood analysis theorem. Each bull in the group was ranked based on these indices (Table 1). In
(Table 1. Heterogeneous sperm index ± SE of individual bulls in the group)
これらの手順を用いると、4頭の雄牛の1群あたり30の遺伝子型決定した胚の平均は、明らかに異なる受精能を有する雄牛の検出を可能にした。***処理をまた、この技術で評価することができた。いくらかのメスを必要とするこのインビボ試験は、どの雄牛が比較的高いまたは低い受精能を有するかに関する情報を迅速に提供する。 Using these procedures, an average of 30 genotyped embryos per group of 4 bulls allowed detection of bulls with distinctly different fertility. Sperm treatment could also be evaluated with this technique. This in vivo test, which requires some females, quickly provides information on which bulls have a relatively high or low fertility.
本発明に従って性別選択した***細胞を用いたメスの人工授精によって得られた仔牛の集団は、性別鑑別されていない選択された***細胞を使用するコントロールと実質的に同一である。さらに、性別選択した***を用いたメスの人工授精は、計画した性別の仔牛の約90%を生じた。上記のように、***細胞は、フローサイトメトリーまたはH33342での染色後の細胞ソーティングによるDNA含有量に基づいて性別選択され得る。その性別選択された***細胞は、次いで、Theriogenology,52:1375(
)(本明細書中に参考として援用される)において記載されるように低温保存され得る。
The population of calves obtained by female artificial insemination using sex-selected sperm cells according to the present invention is substantially the same as a control using selected sperm cells that have not been sex-differentiated. In addition, artificial insemination of females using sex-selected sperm resulted in about 90% of planned sex calves. As described above, sperm cells can be sex selected based on DNA content by flow cytometry or cell sorting after staining with H33342. The sex-selected sperm cells were then transferred to Therogenology, 52: 1375 (
) (Incorporated herein by reference) may be cryopreserved.
発情期を、種々の肉用牛および乳用牛の未経産牛および雌牛に、0.5mg 酢酸メレンゲストロール(MGA)を毎日14日間与え、次いで、その後17〜19日に25mg プロスタグランジンF2(PGF2)を筋肉内で与えることによるか、または12日間隔で25mg PGF2の筋肉注射のいずれかによって、同期化し得た。凍結融解性別選択された授精サンプルまたは同じ射出物由来の凍結融解***のいずれかを用いた授精を、発情を最初に観察して12時間または24時間のいずれかで行った。各飼育群について、その授精の約2/3を、性別鑑別した***を用いて行い、一方コントロール***を、残りにおいて使用した。妊娠および胎仔性別を、2ヶ月後に超音波診断した。 Estrus was given to various beef and dairy heifers and cows given 0.5 mg melengestrol acetate (MGA) daily for 14 days, then 25 mg prostaglandin F on 17-19 days thereafter. 2 (PGF 2 ) could be synchronized either by giving intramuscularly or by intramuscular injection of 25 mg PGF 2 at 12 day intervals. Insemination with either fertilized samples selected for freeze-thaw sex or freeze-thawed spermatozoa from the same ejaculate was performed for either 12 or 24 hours with first observation of estrus. For each breeding group, about 2/3 of the insemination was performed using sex-differentiated sperm, while control sperm was used in the rest. Pregnancy and fetal sex were diagnosed ultrasonically after 2 months.
畜牛を、異なる管理レベルの下で、分娩および離乳を通して13カ所の農場で管理した(1農場につきN=49〜228)。収集したデータには、妊娠期間の長さ、出生時体重、分娩の容易さ(1=正常〜4=帝王切開)、離乳時体重、新生仔死亡、および出生時から離乳時までの死亡を含めた。全ての農場が、出生時体重および離乳時体重を記録したわけではなかった。データを、以下の因子で分散の要因分析に供した:管理群、ソートした*** 対 コントロール***、および仔牛の性別。アークサイン変換を、パーセンテージデータについて使用した。最小2乗平均を、表1に示す。 Cattle were managed on 13 farms through delivery and weaning under different management levels (N = 49-228 per farm). Collected data include length of gestation, birth weight, ease of delivery (1 = normal to 4 = cesarean section), weaning weight, newborn death, and death from birth to weaning It was. Not all farms recorded birth and weaning weights. Data were subjected to analysis of variance with the following factors: control group, sorted sperm versus control sperm, and calf sex. Arcsine transformation was used for percentage data. The least mean square is shown in Table 1.
(表1.性別鑑定した仔牛およびコントロール仔牛からの分娩結果) (Table 1. Parturition results from sex-examined calves and control calves)
研究したあらゆる応答について、性別鑑定した群 対 コントロール群に由来する仔牛の間には何ら有意差がなく(P>0.1)、有意な相互作用もなかった。研究した全ての応答について、管理群の有意な影響があった(離乳時に生存している全ての期待%についてP<0.001、P<0.02)。また、出生時体重:32.2kgおよび35.5kg;離乳時体重:232kgおよび246kg;分娩の困難さ:1.20および1.42;ならびに妊娠期間278日および280日について、雌の仔牛と雄の仔牛との間には有意差があった(全てP<0.001)。 For every response studied, there was no significant difference (P> 0.1) and no significant interaction between calves from gender-tested versus control groups. For all responses studied, there was a significant effect of the control group (P <0.001, P <0.02 for all expected% surviving at weaning). Also, for calf and male females for birth weights: 32.2 kg and 35.5 kg; weaning weights: 232 kg and 246 kg; difficulty of delivery: 1.20 and 1.42; and gestation periods 278 and 280 days There was a significant difference between all calves (all P <0.001).
コントロール仔牛の性別比は、51.0% 雄(N=382)であった。Xソート***は、87.7% 雌を生じ、一方、Yソート***は、93.6%雄を生じた(N=94)。出生時に死亡したいくらかの仔牛は、性別を記録しておらず、含めなかった。 The sex ratio of the control calves was 51.0% male (N = 382). X-sorted sperm yielded 87.7% females, while Y-sorted sperm yielded 93.6% males (N = 94). Some calves that died at birth did not record gender and were not included.
種牛の***のフローサイトメトリーによる分離が最近発達したことにより、予め選択された性別を有する正常仔の生成がもたらされた(Lindsey A.C.,Morris L.H.,Allen W.R.,Schenk J.L.,Squires E.L.,Bruemmer J.E.Equine vet.J.2002,34:128−132)。この技術が利用しやすいので、***は、フローサイトメーターから雌牛に移されている。この研究は、性別の予備選択後の新鮮な種牛の***の寿命および先体状態を試験した。7頭の種牛の各々からの3つの射出物を、人工膣により回収し、スキムミルク−グルコース増量剤(1:1 v/v)中で、20℃で、2〜6時間の間に研究室に輸送した。この***を、400gにて10分間遠心分離し、精漿を除去した。***ペレットを、Kenneys改変タイロード培地(KMT)中で100×106/mlに再懸濁し、Hoechst 33342(5mg/ml、Sigma−Aldrich,St.Louis MO)で染色し、30分間インキュベートし、フローサイトメトリーに供した。ソートした***を遠心分離し、4℃または20℃での48時間保存のために、KMT中で250μlのアリコートにおいて40×106mlに再懸濁した。***の総前進性運動(TPM)および先体状態を、ソートする前、ならびにソートして0時間後、2時間後、12時間後、24時間後、36時間後および48時間後に評価した。そのTPMを、顕微鏡で評価し、先体を、FITC−PNA(Sigma−Aldrich)で染色し、インタクト、斑状または喪失として分類した。種牛、時間および保存温度の影響を、Proc GLM手順を使用して分析しおよび最小平均比較を行った(SAS Institute)。 Recent developments in the separation of sperm from beef cattle by flow cytometry have resulted in the production of normal offspring with preselected genders (Lindsey AC, Morris L.H., Allen W.R. Schenk JL, Squires EL, Brummer JE Equine vet. J 2002, 34: 128-132). Because this technique is easy to use, sperm has been transferred from the flow cytometer to the cow. This study examined the life and acrosome status of fresh sire sperm after gender preselection. Three ejaculates from each of seven cows were collected by artificial vagina and placed in the laboratory for 2-6 hours at 20 ° C. in skim milk-glucose extender (1: 1 v / v). Transported. The semen was centrifuged at 400 g for 10 minutes to remove seminal plasma. Sperm pellets were resuspended at 100 × 10 6 / ml in Kenneys modified Tyrode's medium (KMT), stained with Hoechst 33342 (5 mg / ml, Sigma-Aldrich, St. Louis MO), incubated for 30 minutes, The sample was subjected to flow cytometry. Sorted sperm were centrifuged and resuspended in 40 × 10 6 ml in 250 μl aliquots in KMT for 48 hours storage at 4 ° C. or 20 ° C. Sperm total forward movement (TPM) and acrosome status were assessed before sorting and after 0, 2, 12, 24, 36 and 48 hours of sorting. The TPM was evaluated microscopically and the acrosome was stained with FITC-PNA (Sigma-Aldrich) and classified as intact, patchy or loss. The effects of seed cattle, time and storage temperature were analyzed using the Proc GLM procedure and a minimum average comparison was made (SAS Institute).
時間がたつにつれて、***運動性およびインタクトな先体の割合に関して、種馬の影響があった(p=0.03)。***をHoechst 33342で染色およびインキュベートすると、インタクトな先体の割合の減少がもたらされた(表1)。しかし、ソート後に観察されたインタクトな先体の割合は、ソート前の***集団より高かった。ソート後48時間の間に失われた先体が増加する(p<0.0001)につれて、インタクトな先体の割合は減少した(p<0.0001)が、斑状の先体の割合に対する時間の影響は何らなかった。ソート後の***保存温度の有意な影響があり、その結果、20℃で12時間の保存が、4℃での保存より高い運動性を生じた。フローサイトメトリーによる***の性別ソーティングは、新鮮な***に等しく、24時間にわたって先体完全性を維持し得る***の集団の選択がもたらされた。FACS分離後12時間にわたる***の寿命の維持は、性別ソートされた***を、フローサイトメーターの部位からいくらかの距離に位置した雌牛に移すことを可能にするはずである。 Over time, there was a stallion effect on sperm motility and the proportion of intact acrosomes (p = 0.03). Staining and incubating sperm with Hoechst 33342 resulted in a decrease in the percentage of intact acrosomes (Table 1). However, the percentage of intact acrosomes observed after sorting was higher than the pre-sorted sperm population. As the lost acrosome increased during the 48 hours after sorting (p <0.0001), the percentage of intact acrosomes decreased (p <0.0001), but the time relative to the percentage of patchy acrosomes There was no influence. There was a significant effect of sperm storage temperature after sorting, so that storage at 20 ° C. for 12 hours resulted in higher motility than storage at 4 ° C. Sperm sex sorting by flow cytometry resulted in the selection of a population of sperm that was equal to fresh sperm and could maintain acrosome integrity over 24 hours. Maintaining sperm life span for 12 hours after FACS separation should allow sex-sorted sperm to be transferred to cows located some distance from the site of the flow cytometer.
(表1.経時的なフローソートした***の運動性および先体状態) (Table 1. Flow-sorted sperm motility and acrosome status over time)
予め決定された性別の仔牛は、正確かつ信頼性が高く研究設定において生成された(Lindseyら,Equine Vet.J.2002,34:128−132)。性別ソートされた***は、産業によって、しかし凍結/融解された性別ソートされた***が利用可能であった場合、より効率よく利用される。この研究の目的は、15℃で18時間保存し、フローソートし、次いで凍結した***の運動特性を、18時間15℃で輸送した直後に低温保存した***と比較することであった。5頭の種馬の各々に由来する2つの射出物を、使用した。収集後、両方の処理についての***を、Kenney+改変タイロード(KMT)培地中で25×106/mLに増量し、15℃で18時間、水浴中に保存した。保存後、***を、600gで10分間遠心分離する前に、周囲温度(約22℃)に到達させた。精漿を除去し、***ペレットを、500×106/mlにKMT中で再懸濁した。このサンプルから***のアリコートを取り出し(コントロール)、スキムミルク、卵黄中で87×106/mlに増量し、凍結増量し(4%グリセロール;FR5)、液体窒気体中で凍結する前に90分間にわたり5℃までゆっくりと冷却した。***の第2のアリコート(フローソートした)を、KMT中で100×106/mlに増量し、Hoechst 33342(5mg/ml、Sigma−Aldrich,St.Louis MO)で染色し、30分間インキュベートし、その後、フローサイトメトリーによりソートした。ソートした***を、850gで20分間遠心分離し、FR5中で87×106/mlに再懸濁し、低温保存する前に、90分間にわたって5℃までゆっくりと冷却した。両方の処理についての***を0.25mlストローに詰め、各ストローには、2000万の***を含めた。***を、融解して30分および90分後に、可視的な前進運動性(2回の観察)について(盲検的に)評価した。各ストローからの***のアリコートを、両方、KMTおよび2mMカフェインを含むKMT中に希釈した。サンプルを、評価する前に、37℃で5〜10分間平衡化した。各処理の第2のストローを、Hamilton−Thorn Motility Analyzer(CASA)を用いて(カフェインありまたはなしで)評価した。結果を、表1に示す。運動パラメーターの差異を、ANOVAにより決定した。大部分の測定した応答に従って、フローソーティングは、***運動性に対して有害であった。さらに、2mM カフェインは、多くの***応答を改善した。カフェインがコントロール***よりもソートされた***について、よりいくらかの応答を改善したことにより、相互作用があった。従って、ソーティングにより引き起こされた損傷は、カフェインにより部分的に補償され得る。類似の補償が、雌牛の生殖管において起こり得る可能性がある。保存された、低温保存された種牛***の受精能を、低温保存前に保存およびソートされた***の受精能と比較する研究が現在進行している。 Pre-determined gender calves were generated in a research setting with accuracy and reliability (Lindsey et al., Equine Vet. J. 2002, 34: 128-132). Gender-sorted sperm is more efficiently utilized by the industry, but if frozen / thawed sex-sorted sperm is available. The purpose of this study was to compare the motility characteristics of spermatozoa stored at 15 ° C. for 18 hours, flow sorted, and then frozen and then cryopreserved immediately after transporting at 15 ° C. for 18 hours. Two projectiles from each of the five stallions were used. After collection, sperm for both treatments was increased to 25 × 10 6 / mL in Kenney + modified Tyrode (KMT) medium and stored in a water bath at 15 ° C. for 18 hours. After storage, the sperm was allowed to reach ambient temperature (about 22 ° C.) before being centrifuged at 600 g for 10 minutes. The seminal plasma was removed and the sperm pellet was resuspended in KMT to 500 × 10 6 / ml. Remove aliquots of sperm from this sample (control), increase to 87 × 10 6 / ml in skim milk, egg yolk, increase in freezing (4% glycerol; FR5) for 90 minutes before freezing in liquid nitrogen gas Cooled slowly to 5 ° C. A second aliquot of sperm (flow sorted) was increased to 100 × 10 6 / ml in KMT, stained with Hoechst 33342 (5 mg / ml, Sigma-Aldrich, St. Louis MO) and incubated for 30 minutes. And then sorted by flow cytometry. Sorted sperm were centrifuged at 850 g for 20 minutes, resuspended at 87 × 10 6 / ml in FR5, and slowly cooled to 5 ° C. for 90 minutes before being cryopreserved. Sperm for both treatments were packed into 0.25 ml straws, each straw containing 20 million sperm. Sperm were evaluated (blindly) for visible forward motility (2 observations) 30 and 90 minutes after thawing. An aliquot of sperm from each straw was diluted in KMT containing both KMT and 2 mM caffeine. Samples were equilibrated for 5-10 minutes at 37 ° C. before evaluation. The second straw for each treatment was evaluated (with or without caffeine) using a Hamilton-Thorn Mobility Analyzer (CASA). The results are shown in Table 1. Differences in exercise parameters were determined by ANOVA. According to most measured responses, flow sorting was detrimental to sperm motility. Furthermore, 2 mM caffeine improved many sperm responses. There was an interaction with caffeine improving some response for sperm sorted over control sperm. Thus, damage caused by sorting can be partially compensated by caffeine. Similar compensation may occur in the cow's genital tract. Research is ongoing to compare the fertilizing capacity of stored, cryopreserved bull spermatozoa with the fertilizing capacity of sperm stored and sorted prior to cryopreservation.
C−処理は、2mM カフェインを用いて刺激した。
C-treatment was stimulated with 2 mM caffeine.
プロゲステロンCIDRを12〜14日膣に挿入することによって、コロラド州およびミネソタ州の雌エルク(cow elk)3〜6年齢を、9月の発情期について同調させた。CIDRを除去する際に、200IUのeCGを筋内投与し、60時間後にエルクに時限受精(timed−inseminate)させた。5年齢雄エルク(bull elk)から電気的***を通じて新鮮な***を回収し、ニートな***液として***分類研究室(sperm−sorting laboratory)に輸送するために、4時間かけてゆっくりと約20℃まで冷却した。この***液を、1.5mlアリコートを10秒間、15,000×gで遠心分離することによって系統化(straining)のために、1×109***/mlに濃縮した。***を、34℃で45分間、112μM Hoechst 33342を200×106***/mlで含むTALP培地中でインキュベートし、次いで、分類のために、100×106個/mlに希釈した。X染色体保有***およびY染色体保有***の異なるDNA含量に基づき、***を分類した。X染色体保有エルク***は、Y染色体保有***よりも3.8%多いDNAを含んでいた。MoFlo(登録商標)SXを用いて(TRISベースのシース流体を用いて50psiで操作)、***を4時間かけてフロー分類(flow−sort)した。351帯域および364帯域のアルゴンレーザーを150mWで照射することにより、DNAに結合したHoechst 33342色素を励起させた。X染色体保有***およびY染色体保有***の両方(超音波処理した***アリコートをDNAについて再分析することによって確認した場合、約92%純度)を、約4,700***/秒で、2mlの20%卵黄TRISエクステンダーを含むチューブに回収した。分類した15ml量を、連続的に回収した。各々の性の約110×106***を分類し、そして90分かけて5℃まで冷却した。等量のグリセロール(12%)含有エクステンダーを、5℃にて分類した容量に添加した。30mlを含有する分類した***アリコートを、4℃で20分間、850×gで遠心分離することによって濃縮した。***ペレットをプールし、21.7×106***/mlに調整し、そして0.25mlストローに充填した。合計5×106***を含有する各ストローを液体窒素蒸気中で凍結した。コントロールとして、同じ***液由来の合計5×106***を、有性***と同じ時間、0.25mlストロー中で凍結させた。37℃で30秒間解凍した後、65%および60%の***(それぞれ、コントロールおよび有性)は、徐々に運動しだした(目視による見積もりにより決定)。3つの異なる場所および管理スキームのウシ(cow)を、慣用的な子宮体における大腿骨頸部***堆積法を用いて受精させた。妊娠特異的プロテインB(Bio Tracking,Moscow,Idaho)について血液をアッセイすることによって、妊娠を受精の40日後に決定した。1つの場所の10匹のウシ(cow)は、受精時に乏しい条件に置き、有性***においてもコントロール***においても妊娠が達成されなかった。他の場所での有性***による妊娠率(61%;11/18)は、コントロールの受精(50%;3/6)と類似していた。これらの妊娠率(有性およびコントロール)は、通常のエルク人工授精において使用されるよりも少ない***から生じた。11匹中9匹(82%)の有性仔ウシ(calf)は、予測された性別であった。 Colorado and Minnesota female elks 3-6 ages were synchronized for the September estrus by inserting progesterone CIDR into the vagina for 12-14 days. When removing CIDR, 200 IU of eCG was administered intramuscularly and 60 hours later, the elk was timed-inseminated. To recover fresh semen from a 5-year-old male elk through electrical ejaculation and transport it as neat ejaculate to a sperm-sorting laboratory at about 20 ° C. slowly over 4 hours. Until cooled. The ejaculate was concentrated to 1 × 10 9 sperm / ml for straining by centrifuging a 1.5 ml aliquot for 10 seconds at 15,000 × g. Semen was incubated in TALP medium containing 112 μM Hoechst 33342 at 200 × 10 6 sperm / ml for 45 minutes at 34 ° C. and then diluted to 100 × 10 6 cells / ml for classification. Sperm were classified based on the different DNA content of sperm bearing X chromosome and sperm bearing Y chromosome. Elk sperm carrying X chromosomes contained 3.8% more DNA than sperm carrying Y chromosomes. Using MoFlo® SX (operating at 50 psi with TRIS-based sheath fluid), sperm were flow-sorted over 4 hours. Hoechst 33342 dye bound to DNA was excited by irradiating argon lasers of 351 and 364 bands at 150 mW. Both X- and Y-chromosome spermatozoa (approximately 92% purity when confirmed by reanalysis of sonicated sperm aliquots for DNA) at about 4,700 sperm / second at 2 ml of 20% Collected into tubes containing egg yolk TRIS extenders. A sorted 15 ml volume was collected continuously. Approximately 110 × 10 6 spermatozoa of each sex were classified and cooled to 5 ° C. over 90 minutes. An equal amount of extender containing glycerol (12%) was added to the classified volume at 5 ° C. Sorted sperm aliquots containing 30 ml were concentrated by centrifugation at 850 × g for 20 minutes at 4 ° C. Sperm pellets were pooled, adjusted to 21.7 × 10 6 sperm / ml and filled into 0.25 ml straws. Each straw containing a total of 5 × 10 6 sperm was frozen in liquid nitrogen vapor. As a control, a total of 5 × 10 6 sperm from the same ejaculate was frozen in a 0.25 ml straw for the same time as the sexual sperm. After thawing at 37 ° C. for 30 seconds, 65% and 60% sperm (control and sex, respectively) began to move gradually (determined by visual estimation). Three different locations and management schemes of cows were fertilized using the femoral neck sperm deposition method in a conventional uterine body. Pregnancy was determined 40 days after fertilization by assaying blood for pregnancy-specific protein B (BioTracking, Moscow, Idaho). Ten cows at one place were placed in poor conditions at fertilization and pregnancy was not achieved in sexual or control sperm. Pregnancies with sexual sperm elsewhere (61%; 11/18) were similar to control fertilization (50%; 3/6). These pregnancy rates (sex and control) resulted from fewer sperm than are used in normal elk artificial insemination. Nine out of 11 (82%) sexual calves had the expected gender.
本発明はさらに、本発明の上記実施形態のいずれかに従って生産された哺乳動物、またはX染色体保有***細胞の濃縮集団またはY染色体保有***細胞の濃縮集団のいずれかを有する***細胞受精サンプルを提供する本発明の種々の実施形態に従う予め決定された性別の哺乳動物、または、***細胞受精サンプルが哺乳動物の特定の種を使用する受精に使用される代表的な数と比較して少数の***細胞を含有する本発明の任意の実施形態において生産される哺乳動物、または上記の本発明に従って生産されるエルク子孫を包含し得る。 The present invention further provides a sperm cell fertilized sample having either a mammal produced according to any of the above embodiments of the present invention, or an enriched population of X chromosome bearing sperm cells or enriched population of Y chromosome bearing sperm cells A mammal of a predetermined sex according to various embodiments of the invention, or a small number of sperm compared to a representative number used for fertilization in which a sperm cell fertilization sample uses a particular species of mammal Mammals produced in any embodiment of the invention containing cells, or elk progeny produced according to the invention described above may be included.
前述から容易に理解され得るように、本発明の基本概念は、種々の方法で具体化され得る。その方法は、***細胞処理を達成する技術およびデバイスの両方を含む***細胞処理系を包含する。この適用において、種々の***細胞処理技術が、記載される種々のデバイスにより達成されることが示された結果の一部としておよびその用途に特有の工程として開示されている。これらは単に、意図され記載されるようなデバイスを用いた自然な結果である。さらに、いくつかのデバイスが開示されているが、これらは特定の方法を達成しただけでなく、多くの方法で変更され得ることが理解されるべきである。重要なことは、前述の全てに関して、これらの局面の全てが、本開示により包含されることが理解されるべきである。 As can be readily appreciated from the foregoing, the basic concepts of the present invention can be embodied in various ways. The method includes a sperm cell processing system that includes both techniques and devices to achieve sperm cell processing. In this application, various sperm cell processing techniques are disclosed as part of the results shown to be achieved by the various devices described and as a process specific to that application. These are simply natural results with devices as intended and described. Furthermore, although several devices are disclosed, it should be understood that these have not only achieved a particular method, but can be varied in many ways. Importantly, with respect to all of the foregoing, it should be understood that all of these aspects are encompassed by the present disclosure.
この非仮出願に含まれる議論は、基礎的な記載として利用されることを意図している。読者は、詳細な説明が、可能性のある全ての実施形態を明示的に記載し得ず;多くの代替物が暗示されていることを認識するはずである。また、この説明が、本発明の全体的な性質を十分に説明し得ず、かつどの程度、各々の特徴または要素がより広範な機能または多くの種々の代替要素もしくは等価要素を実際に代表し得るかを明示的に示し得ない。繰り返すが、これらは、本開示に暗示的に含まれれている。本発明がデバイス指向技術において記載されている場合、そのデバイスの各エレメントは、機能を暗黙のうちに実施する。装置クレームは、記載されるデバイスを包含し得るだけでなく、方法クレームまたはプロセスクレームもまた、本発明および各エレメントが実施する機能を発揮することを含み得る。説明も用語も、特許出願全体に含まれるクレームの範囲を限定することを意図していない。 The discussion contained in this non-provisional application is intended to be used as a basic description. The reader should recognize that the detailed description may not explicitly describe all possible embodiments; many alternatives are implied. Also, this description does not adequately explain the overall nature of the invention, and to what extent each feature or element actually represents a broader function or many different alternative or equivalent elements. I can't explicitly show what I get. Again, these are implicitly included in the present disclosure. When the invention is described in device-oriented technology, each element of the device performs a function implicitly. Apparatus claims may not only encompass the described device, but method claims or process claims may also include performing the functions performed by the invention and each element. Neither the description nor the terms are intended to limit the scope of the claims contained in the entire patent application.
本発明の本質から逸脱することなく種々の変更がなされ得ることもまた理解されるはずである。このような変更もまた、この説明に暗示的に含まれる。これらはなおも、本発明の範囲内に含まれる。示される明示的な実施形態、多くの種々の暗示される代替の実施形態、および広範な方法またはプロセス等を含む広範な開示が、本開示により包含される。 It should also be understood that various changes can be made without departing from the essence of the invention. Such changes are also implicitly included in this description. These are still included within the scope of the present invention. Extensive disclosure is encompassed by this disclosure, including the explicit embodiments shown, many different implied alternative embodiments, and a wide variety of methods or processes.
さらに、本発明およびクレームの種々の各要素もまた、種々の様式で達成され得る。本開示は、各々のこのようなバリエーションを包含すること、それが任意の装置実施形態、方法実施形態、もしくはプロセス実施形態の実施形態のバリエーションであること、またはこれらの任意の要素のバリエーションでさえあることが理解されるはずである。特に、本開示は、本発明の要素に関するので、各要素についての用語は、等価な装置用語または方法用語により表現され得る(機能または結果のみが同じであったとしても)ことが理解されるはずである。このような等価な用語、より広範な用語、またはより一般的な用語でさえも、各要素または作用の説明に包含されるとみなされるはずである。このような用語は、所望の場合、本発明に与えられる権利の暗示的に広範な範囲を明示することで置換され得る。実施例は1つではないので、全ての作用が、その作用を起こす手段としてまたはその作用を引き起こす要素として表現され得ることが理解されるはずである。同様に、開示される各々の物理的要素は、その物理的要素が促進する作用の開示を包含することが理解されるはずである。この最後の局面に関して、実施例は1つではないので、「フローソーター(flow−sorter)」の開示は、「フロー分類(flow−sorting)」の作用の開示を包含する(明示的に議論していようがなかろうが)ことが理解されるはずである。逆に言うと、「フロー分類」の作用の開示が有効に存在する場合、そのような開示は、「フローソーター」の開示および「フロー分類手段」の開示さえも包含することが理解されるはずである。このような変更および代替用語は、この説明に明示的に含まれることが理解されるはずである。 Moreover, the various elements of the invention and the claims can also be achieved in various ways. The present disclosure encompasses each such variation, that it is a variation of any apparatus embodiment, method embodiment, or process embodiment embodiment, or even a variation of any of these elements. It should be understood that there is. In particular, since the present disclosure relates to elements of the invention, it should be understood that the terminology for each element may be expressed in terms of equivalent device or method terms (even if only functions or results are the same). It is. Such equivalent terms, broader terms, or even more general terms should be considered to be included in the description of each element or action. Such terms can be substituted, if desired, by specifying an implicitly broad range of rights conferred to the invention. It should be understood that not all embodiments can be expressed as a means for causing the action or as an element for causing the action. Similarly, each physical element disclosed should be understood to encompass a disclosure of the action that the physical element facilitates. With respect to this last aspect, since there is no single example, the disclosure of “flow-sorter” encompasses the disclosure of the action of “flow-sorting” (discussed explicitly). It should be understood whether or not. Conversely, it should be understood that where a disclosure of the effect of “flow classification” is in effect, such disclosure includes disclosure of “flow sorter” and even disclosure of “flow classification means”. It is. It should be understood that such changes and alternative terms are expressly included in this description.
本願において特許について言及される法律、法令、規定、もしくは規則の任意の行為;または本願において特許について言及される特許、刊行物、もしくは他の参考文献は、本明細書中に参考として援用する。さらに、使用される各用語に関して、本願におけるその使用がこのような解釈と矛盾しない限り、一般的な辞書の定義が、各用語について組み込まれていると理解されるべきであり、全ての定義、代替用語、および類義語(例えば、Random House Webster’s Unabridged Dictionary,第二版に含まれるようなもの)が、本明細書中に参考として援用される。最後に、「仮特許出願に従って参考として援用される参考文献」リストに列挙される全ての参考文献、または本願と共に提出された他の情報陳述が、本明細書に添付され、かつ本明細書中に参考として援用される。しかし、上述の各々に関して、参考として援用されるこのような情報または陳述がこの/これらの発明の特許化と矛盾すると解釈され得る程度まで、このような陳述が、本出願人によりなされたと明示的にみなされないべきである。 Any act of a law, statute, regulation, or regulation referred to in this application; or a patent, publication, or other reference referred to in this application as a patent is hereby incorporated by reference. Further, for each term used, it should be understood that a general dictionary definition is incorporated for each term, unless its use in this application is inconsistent with such interpretation. Alternative terms and synonyms (such as those included in Random House Webster's Integrated Dictionary, 2nd edition) are hereby incorporated by reference. Finally, all references listed in the “References incorporated by reference according to provisional patent application” list, or other information statements filed with this application, are attached to this specification and Is incorporated by reference. However, for each of the foregoing, to the extent that such information or statements incorporated by reference may be construed as inconsistent with this / the patenting of these inventions, such statements are expressly stated to have been made by the applicant. Should not be considered.
従って、本出願人は、少なくとも:i)本明細書中に開示され記載されているような***細胞処理デバイスの各々、ii)開示され記載される関連方法、iii)これらのデバイスおよび方法の各々の類似のバリエーション、等価なバリエーション、および暗示されるバリエーションでさえ、iv)開示され記載されるような示される各機能を達成する代替設計、v)開示され記載されるものを達成することが暗示されているような示される各機能を達成する代替設計および方法、vi)別個の独立した発明として示される各特徴、要素、および工程、vii)開示される種々のシステムおよび要素によって強化される応用、viii)このようなシステムまたは要素によって生産される、得られる産物、およびix)本明細書中および添付の実施例のいずれかを参照して以前に実質的に記載された方法および装置、x)開示される各要素の種々の組み合わせおよび順列、ならびにxi)各々の潜在的に従属するクレームまたは提示される独立クレームもしくは概念の各々およびそれら一つずつに対する従属としての概念、を主張していることが理解されるはずである。これに関して、実施上の理由のためおよび潜在的な数百ものクレームを追加することを回避するため、本出願人は、最終的に、最初の従属のみを有するクレームを提示し得ることが理解されるはずである。サポートは、新規事項に関する法律(欧州特許条約第123条第2項および米国特許法第132条または他のこのような法律が挙げられるがこれらに限定されない)の下で、任意の種々の従属または1つの独立クレームもしくは概念の下で任意のほかの独立クレームまたは概念の下にある従属または要素として提示される他の要素の追加が許可されるために必要とされる程度に存在することが理解されるはずである。さらに、使用される場合、他動詞的用語「〜を含む」の使用は、従来のクレーム解釈に従って、本願において「開放」クレームを維持するために使用される。従って、その内容がそうでないことを必要としない限り、用語「〜を含む」またはそのバリエーション(例えば、「包含する」等)は、言及される要素もしくは工程または要素もしくは工程のグループの包含を意味し、任意の他の要素もしくは工程または要素もしくは工程のグループの排除を意味しないことが意図される。このような用語は、それらの最も広範な形態において、本出願人に、法的に許容される最も広い権利範囲を与えるよう解釈されるはずである。 Accordingly, Applicants have at least: i) each of sperm cell treatment devices as disclosed and described herein, ii) related methods disclosed and described, iii) each of these devices and methods. Similar variations, equivalent variations, and even suggested variations of iv) alternative designs that achieve each of the indicated functions as disclosed and described, v) that it is implied to achieve what is disclosed and described Vi) alternative features and elements shown as separate independent inventions, vii) applications enhanced by the various disclosed systems and elements Viii) the resulting product produced by such a system or element, and ix) herein and attached Methods and apparatus substantially as hereinbefore described with reference to any of the embodiments, x) various combinations and permutations of each disclosed element, and xi) each potentially dependent claim or presentation It should be understood that it claims each independent claim or concept as a subordinate to each one and each. In this regard, it will be appreciated that for practical reasons and to avoid adding hundreds of potential claims, the applicant may ultimately present a claim with only the first subordination. Should be. Support is subject to any various subordinate or subordinate under laws relating to new matter, including but not limited to Article 123 (2) of the European Patent Convention and Article 132 or other such laws. Understand that it exists to the extent necessary to allow the addition of other elements presented as subordinates or elements under any other independent claim or concept under one independent claim or concept Should be done. Further, when used, the use of the transitive term “comprising” is used to maintain an “open” claim in this application, in accordance with conventional claim interpretation. Thus, unless the content requires otherwise, the term “comprising” or variations thereof (eg, “including”, etc.) means the inclusion of the referenced element or step or group of elements or steps. And is not intended to imply the exclusion of any other element or step or group of elements or steps. Such terms, in their broadest form, should be construed to give the applicant the broadest legally permissible scope of rights.
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